diff --git a/src/main/java/io/github/skippyall/minions/MinionRegistries.java b/src/main/java/io/github/skippyall/minions/MinionRegistries.java
index 866246b..9ff4631 100644
--- a/src/main/java/io/github/skippyall/minions/MinionRegistries.java
+++ b/src/main/java/io/github/skippyall/minions/MinionRegistries.java
@@ -1,6 +1,8 @@
 package io.github.skippyall.minions;
 
 import com.mojang.serialization.Lifecycle;
+import io.github.skippyall.minions.minion.MinionRuntime;
+import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
 import io.github.skippyall.minions.minion.skin.SkinProvider;
 import io.github.skippyall.minions.program.argument.GenericArgumentType;
 import io.github.skippyall.minions.program.instruction.InstructionType;
@@ -12,7 +14,7 @@ import net.minecraft.util.Identifier;
 
 public class MinionRegistries {
     public static final Registry<ValueType<?>> VALUE_TYPES = registry("value_type");
-    public static final Registry<GenericArgumentType> GENERIC_ARGUMENT_TYPE_REGISTRY = registry("generic_argument_type");
+    public static final Registry<GenericArgumentType<MinionRuntime>> GENERIC_ARGUMENT_TYPE_REGISTRY = registry("generic_argument_type");
     public static final Registry<InstructionType<?>> INSTRUCTION_TYPES = registry("instruction_type");
     public static final Registry<SkinProvider> SKIN_PROVIDERS = registry("skin_providers");
 
diff --git a/src/main/java/io/github/skippyall/minions/gui/InstructionGui.java b/src/main/java/io/github/skippyall/minions/gui/InstructionGui.java
index 6de99a2..e575427 100644
--- a/src/main/java/io/github/skippyall/minions/gui/InstructionGui.java
+++ b/src/main/java/io/github/skippyall/minions/gui/InstructionGui.java
@@ -112,7 +112,7 @@ public class InstructionGui {
         }
     }
 
-    public static <T, A extends Argument<T, ? extends SpecificArgumentType<T, A>>> void configureArgumentMenu(String name, ConfiguredInstruction<?> instruction, Parameter<T> parameter, MinionFakePlayer minion, ServerPlayerEntity player) {
+    public static <T, A extends Argument<T, ? extends SpecificArgumentType<T, A, MinionFakePlayer>, MinionFakePlayer>> void configureArgumentMenu(String name, ConfiguredInstruction<?> instruction, Parameter<T> parameter, MinionFakePlayer minion, ServerPlayerEntity player) {
         if(!checkInstructionExists(name, instruction, minion, player)) {
             return;
         }
diff --git a/src/main/java/io/github/skippyall/minions/minion/MinionRuntime.java b/src/main/java/io/github/skippyall/minions/minion/MinionRuntime.java
new file mode 100644
index 0000000..70999d2
--- /dev/null
+++ b/src/main/java/io/github/skippyall/minions/minion/MinionRuntime.java
@@ -0,0 +1,14 @@
+package io.github.skippyall.minions.minion;
+
+import io.github.skippyall.minions.MinionRegistries;
+import io.github.skippyall.minions.program.InstructionRuntime;
+import io.github.skippyall.minions.program.argument.GenericArgumentType;
+import net.minecraft.registry.Registry;
+
+public class MinionRuntime implements InstructionRuntime<MinionRuntime> {
+
+    @Override
+    public Registry<GenericArgumentType<MinionRuntime>> getGenericArgumentTypeRegistry() {
+        return MinionRegistries.GENERIC_ARGUMENT_TYPE_REGISTRY;
+    }
+}
diff --git a/src/main/java/io/github/skippyall/minions/program/InstructionRuntime.java b/src/main/java/io/github/skippyall/minions/program/InstructionRuntime.java
new file mode 100644
index 0000000..ff51bf7
--- /dev/null
+++ b/src/main/java/io/github/skippyall/minions/program/InstructionRuntime.java
@@ -0,0 +1,29 @@
+package io.github.skippyall.minions.program;
+
+import com.mojang.serialization.Codec;
+import io.github.skippyall.minions.program.argument.Argument;
+import io.github.skippyall.minions.program.argument.ArgumentList;
+import io.github.skippyall.minions.program.argument.Arguments;
+import io.github.skippyall.minions.program.argument.GenericArgumentType;
+import io.github.skippyall.minions.program.argument.SpecificArgumentType;
+import net.minecraft.registry.Registry;
+
+public interface InstructionRuntime<R extends InstructionRuntime<R>> {
+    Registry<GenericArgumentType<R>> getGenericArgumentTypeRegistry();
+
+    default Codec<GenericArgumentType<R>> getGenericArgumentTypeCodec() {
+        return getGenericArgumentTypeRegistry().getCodec();
+    }
+
+    default Codec<SpecificArgumentType<?,?,R>> getSpecificArgumentTypeCodec() {
+        return Arguments.createSpecificTypeCodec(getGenericArgumentTypeCodec());
+    }
+
+    default Codec<Argument<?,?,R>> getArgumentCodec() {
+        return Arguments.createArgumentCodec(getGenericArgumentTypeCodec());
+    }
+
+    default Codec<ArgumentList<R>> getArgumentListCodec() {
+        return ArgumentList.getCodec(getGenericArgumentTypeCodec());
+    }
+}
diff --git a/src/main/java/io/github/skippyall/minions/program/argument/Argument.java b/src/main/java/io/github/skippyall/minions/program/argument/Argument.java
index 54ef08a..7adfe7a 100644
--- a/src/main/java/io/github/skippyall/minions/program/argument/Argument.java
+++ b/src/main/java/io/github/skippyall/minions/program/argument/Argument.java
@@ -1,7 +1,7 @@
 package io.github.skippyall.minions.program.argument;
 
 import io.github.skippyall.minions.gui.GuiDisplay;
-import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
+import io.github.skippyall.minions.program.InstructionRuntime;
 import io.github.skippyall.minions.program.value.ValueType;
 import org.jetbrains.annotations.Nullable;
 
@@ -12,8 +12,8 @@ import org.jetbrains.annotations.Nullable;
  * @param <T> The type of the <code>Argument</code>'s value
  * @param <S> The <code>SpecificArgumentType</code>
  */
-public interface Argument<T, S extends SpecificArgumentType<T, ? extends Argument<T, S>>> {
-    T resolve(MinionFakePlayer minion);
+public interface Argument<T, S extends SpecificArgumentType<T, ? extends Argument<T, S, R>, R>, R extends InstructionRuntime<R>> {
+    T resolve(R minion);
 
     default ValueType<T> getValueType() {
         return getType().getValueType();
@@ -23,7 +23,7 @@ public interface Argument<T, S extends SpecificArgumentType<T, ? extends Argumen
 
     S getType();
 
-    default <U, A extends Argument<U, ? extends SpecificArgumentType<U,A>>> @Nullable A cast(ValueType<U> type) {
+    default <U, A extends Argument<U, ? extends SpecificArgumentType<U,A,R>, R>> @Nullable A cast(ValueType<U> type) {
         if(getValueType() == type) {
             //noinspection unchecked
             return (A) this;
diff --git a/src/main/java/io/github/skippyall/minions/program/argument/ArgumentList.java b/src/main/java/io/github/skippyall/minions/program/argument/ArgumentList.java
index 75d2abf..9c71411 100644
--- a/src/main/java/io/github/skippyall/minions/program/argument/ArgumentList.java
+++ b/src/main/java/io/github/skippyall/minions/program/argument/ArgumentList.java
@@ -1,37 +1,36 @@
 package io.github.skippyall.minions.program.argument;
 
 import com.mojang.serialization.Codec;
+import io.github.skippyall.minions.Minions;
 import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
+import io.github.skippyall.minions.program.InstructionRuntime;
 
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
 
-public class ArgumentList {
-    public static final Codec<ArgumentList> CODEC = Codec.unboundedMap(Codec.STRING, Arguments.ARGUMENT_CODEC)
-            .xmap(ArgumentList::new, list -> list.arguments);
-
-    private final Map<String, Argument<?, ?>> arguments;
+public class ArgumentList<R extends InstructionRuntime<R>> {
+    private final Map<String, Argument<?, ?, R>> arguments;
 
     public ArgumentList() {
         arguments = new HashMap<>();
     }
 
-    public ArgumentList(Map<String, Argument<?,?>> arguments) {
+    public ArgumentList(Map<String, Argument<?,?, R>> arguments) {
         this.arguments = new HashMap<>(arguments);
     }
 
-    public <T> T getValue(Parameter<T> parameter, MinionFakePlayer minion) {
-        Argument<T,?> argument = getArgument(parameter);
-        return argument != null ? argument.resolve(minion) : null;
+    public <T> T getValue(Parameter<T> parameter, R runtime) {
+        Argument<T,?,R> argument = getArgument(parameter);
+        return argument != null ? argument.resolve(runtime) : null;
     }
 
-    public <T, A extends Argument<T, ? extends SpecificArgumentType<T,A>>> A getArgument(Parameter<T> parameter) {
-        Argument<?, ?> argument = arguments.get(parameter.name());
+    public <T, A extends Argument<T, ? extends SpecificArgumentType<T,A,R>,R>> A getArgument(Parameter<T> parameter) {
+        Argument<?, ?,R> argument = arguments.get(parameter.name());
         return argument == null ? null : argument.cast(parameter.type());
     }
 
-    public <T> void setArgument(Parameter<T> parameter, Argument<T,?> argument) {
+    public <T> void setArgument(Parameter<T> parameter, Argument<T,?,R> argument) {
         arguments.put(parameter.name(), argument);
     }
 
@@ -47,4 +46,9 @@ public class ArgumentList {
         }
         return true;
     }
+
+    public static <R extends InstructionRuntime<R>> Codec<ArgumentList<R>> getCodec(Codec<GenericArgumentType<R>> genericCodec) {
+        return Codec.unboundedMap(Codec.STRING, Arguments.createArgumentCodec(genericCodec))
+                .xmap(ArgumentList::new, list -> list.arguments);
+    }
 }
diff --git a/src/main/java/io/github/skippyall/minions/program/argument/Arguments.java b/src/main/java/io/github/skippyall/minions/program/argument/Arguments.java
index 946159b..18728af 100644
--- a/src/main/java/io/github/skippyall/minions/program/argument/Arguments.java
+++ b/src/main/java/io/github/skippyall/minions/program/argument/Arguments.java
@@ -3,34 +3,48 @@ package io.github.skippyall.minions.program.argument;
 import com.mojang.serialization.Codec;
 import io.github.skippyall.minions.MinionRegistries;
 import io.github.skippyall.minions.Minions;
+import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
+import io.github.skippyall.minions.program.InstructionRuntime;
+import io.github.skippyall.minions.program.value.ValueType;
 import net.minecraft.registry.Registry;
 import net.minecraft.util.Identifier;
 
 public class Arguments {
-    public static final Codec<SpecificArgumentType<?,?>> SPECIFIC_ARGUMENT_TYPE_CODEC = MinionRegistries.GENERIC_ARGUMENT_TYPE_REGISTRY.getCodec().dispatch(
-            "type",
-            SpecificArgumentType::getGenericArgumentType,
-            generic ->
-                    MinionRegistries.VALUE_TYPES.getCodec().xmap(
-                            generic::createTypeSpecific,
-                            SpecificArgumentType::getValueType
-                    ).fieldOf("valueType")
-    );
+    public static final Codec<SpecificArgumentType<?,?, MinionFakePlayer>> SPECIFIC_ARGUMENT_TYPE_CODEC = createSpecificTypeCodec(MinionRegistries.GENERIC_ARGUMENT_TYPE_REGISTRY.getCodec());
+    public static final Codec<Argument<?,?,MinionFakePlayer>> ARGUMENT_CODEC = createArgumentCodecFromSpecific(SPECIFIC_ARGUMENT_TYPE_CODEC);
 
-    public static final Codec<Argument<?,?>> ARGUMENT_CODEC = SPECIFIC_ARGUMENT_TYPE_CODEC.dispatch(Argument::getType, specific -> specific.getArgumentCodec().fieldOf("data"));
+    public static final GenericArgumentType<MinionFakePlayer> VALUE_ARGUMENT = register(Identifier.of(Minions.MOD_ID, "value"), ValueArgumentType::new);
 
-    public static final GenericArgumentType VALUE_ARGUMENT = register(Identifier.of(Minions.MOD_ID, "value"), ValueArgumentType::new);
+    public static <R> Codec<SpecificArgumentType<?,?,R>> createSpecificTypeCodec(Codec<GenericArgumentType<R>> genericCodec) {
+        return genericCodec.dispatch(
+                "type",
+                SpecificArgumentType::getGenericArgumentType,
+                generic ->
+                        MinionRegistries.VALUE_TYPES.getCodec().xmap(
+                                generic::createTypeSpecific,
+                                SpecificArgumentType::getValueType
+                        ).fieldOf("valueType")
+        );
+    }
 
-    /*public static <V> SpecificArgumentType<V, ? extends Argument<V, ?>> getArgumentType(Identifier id, ValueType<V> valueType) {
-        GenericArgumentType generic = MinionRegistries.GENERIC_ARGUMENT_TYPE_REGISTRY.get(id);
+    public static <R extends InstructionRuntime<R>> Codec<Argument<?, ?, R>> createArgumentCodecFromSpecific(Codec<SpecificArgumentType<?,?,R>> specificTypeCodec) {
+        return specificTypeCodec.dispatch(Argument::getType, specific -> specific.getArgumentCodec().fieldOf("data"));
+    }
+
+    public static <R extends InstructionRuntime<R>> Codec<Argument<?,?,R>> createArgumentCodec(Codec<GenericArgumentType<R>> genericTypeCodec) {
+        return createArgumentCodecFromSpecific(createSpecificTypeCodec(genericTypeCodec));
+    }
+
+    public static <V> SpecificArgumentType<V, ? extends Argument<V, ?, MinionFakePlayer>, MinionFakePlayer> getArgumentType(Identifier id, ValueType<V> valueType) {
+        GenericArgumentType<MinionFakePlayer> generic = MinionRegistries.GENERIC_ARGUMENT_TYPE_REGISTRY.get(id);
         if(generic != null) {
             return generic.createTypeSpecific(valueType);
         }
 
         return null;
-    }*/
+    }
 
-    public static GenericArgumentType register(Identifier id, GenericArgumentType argumentType) {
+    public static GenericArgumentType<MinionFakePlayer> register(Identifier id, GenericArgumentType<MinionFakePlayer> argumentType) {
         return Registry.register(MinionRegistries.GENERIC_ARGUMENT_TYPE_REGISTRY, id, argumentType);
     }
 }
diff --git a/src/main/java/io/github/skippyall/minions/program/argument/GenericArgumentType.java b/src/main/java/io/github/skippyall/minions/program/argument/GenericArgumentType.java
index d2844c5..9f698a7 100644
--- a/src/main/java/io/github/skippyall/minions/program/argument/GenericArgumentType.java
+++ b/src/main/java/io/github/skippyall/minions/program/argument/GenericArgumentType.java
@@ -1,7 +1,16 @@
 package io.github.skippyall.minions.program.argument;
 
+import io.github.skippyall.minions.program.InstructionRuntime;
 import io.github.skippyall.minions.program.value.ValueType;
 
-public interface GenericArgumentType {
-    <V> SpecificArgumentType<V, ? extends Argument<V,?>> createTypeSpecific(ValueType<V> valueType);
+public interface GenericArgumentType<R extends InstructionRuntime<R>> {
+    default <V> SpecificArgumentType<V, ? extends Argument<V, ?, R>, R> createTypeSpecific(ValueType<V> valueType) {
+        return createTypeSpecific(valueType, this);
+    }
+
+    <V> SpecificArgumentType<V, ? extends Argument<V, ?, R>, R> createTypeSpecific(ValueType<V> valueType, GenericArgumentType<R> me);
+
+    default boolean canCreate(ValueType<?> valueType) {
+        return true;
+    }
 }
diff --git a/src/main/java/io/github/skippyall/minions/program/argument/SpecificArgumentType.java b/src/main/java/io/github/skippyall/minions/program/argument/SpecificArgumentType.java
index 4934ee0..b8ad189 100644
--- a/src/main/java/io/github/skippyall/minions/program/argument/SpecificArgumentType.java
+++ b/src/main/java/io/github/skippyall/minions/program/argument/SpecificArgumentType.java
@@ -1,6 +1,7 @@
 package io.github.skippyall.minions.program.argument;
 
 import com.mojang.serialization.Codec;
+import io.github.skippyall.minions.program.InstructionRuntime;
 import io.github.skippyall.minions.program.value.ValueType;
 import net.minecraft.server.network.ServerPlayerEntity;
 import org.jetbrains.annotations.Nullable;
@@ -13,15 +14,15 @@ import java.util.concurrent.CompletableFuture;
  * @param <V> The value type of the <code>Argument</code>s to create
  * @param <A> The type of the <code>Argument</code>s themselves
  */
-public abstract class SpecificArgumentType<V, A extends Argument<V, ? extends SpecificArgumentType<V, A>>> {
-    protected final ValueType<V> valueType;
+public abstract class SpecificArgumentType<V, A extends Argument<V, ? extends SpecificArgumentType<V, A, R>, R>, R extends InstructionRuntime<R>> {
+    public final ValueType<V> valueType;
+    public final GenericArgumentType<R> genericType;
 
-    public SpecificArgumentType(ValueType<V> valueType) {
+    public SpecificArgumentType(ValueType<V> valueType, GenericArgumentType<R> genericType) {
         this.valueType = valueType;
+        this.genericType = genericType;
     }
 
-    public abstract GenericArgumentType getGenericArgumentType();
-
     public abstract Codec<A> getArgumentCodec();
 
     public abstract CompletableFuture<A> openArgumentDialog(ServerPlayerEntity player, @Nullable A previousArgument);
@@ -29,4 +30,8 @@ public abstract class SpecificArgumentType<V, A extends Argument<V, ? extends Sp
     public ValueType<V> getValueType() {
         return valueType;
     }
+
+    public GenericArgumentType<R> getGenericArgumentType() {
+        return genericType;
+    }
 }
diff --git a/src/main/java/io/github/skippyall/minions/program/argument/ValueArgument.java b/src/main/java/io/github/skippyall/minions/program/argument/ValueArgument.java
index f3b67a5..f8cef1a 100644
--- a/src/main/java/io/github/skippyall/minions/program/argument/ValueArgument.java
+++ b/src/main/java/io/github/skippyall/minions/program/argument/ValueArgument.java
@@ -2,15 +2,16 @@ package io.github.skippyall.minions.program.argument;
 
 import io.github.skippyall.minions.gui.GuiDisplay;
 import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
+import io.github.skippyall.minions.program.InstructionRuntime;
 
 /**
  * An argument that always resolves to a fixed value
  */
-public class ValueArgument<T> implements Argument<T, ValueArgumentType<T>> {
-    private final ValueArgumentType<T> type;
+public class ValueArgument<T, R extends InstructionRuntime<R>> implements Argument<T, ValueArgumentType<T, R>, R> {
+    private final ValueArgumentType<T,R> type;
     private final T value;
 
-    public ValueArgument(ValueArgumentType<T> valueType, T value) {
+    public ValueArgument(ValueArgumentType<T,R> valueType, T value) {
         this.type = valueType;
         this.value = value;
     }
@@ -20,7 +21,7 @@ public class ValueArgument<T> implements Argument<T, ValueArgumentType<T>> {
     }
 
     @Override
-    public T resolve(MinionFakePlayer minion) {
+    public T resolve(R runtime) {
         return value;
     }
 
@@ -30,7 +31,7 @@ public class ValueArgument<T> implements Argument<T, ValueArgumentType<T>> {
     }
 
     @Override
-    public ValueArgumentType<T> getType() {
+    public ValueArgumentType<T,R> getType() {
         return type;
     }
 }
diff --git a/src/main/java/io/github/skippyall/minions/program/argument/ValueArgumentType.java b/src/main/java/io/github/skippyall/minions/program/argument/ValueArgumentType.java
index 7316bad..bce1169 100644
--- a/src/main/java/io/github/skippyall/minions/program/argument/ValueArgumentType.java
+++ b/src/main/java/io/github/skippyall/minions/program/argument/ValueArgumentType.java
@@ -1,29 +1,25 @@
 package io.github.skippyall.minions.program.argument;
 
 import com.mojang.serialization.Codec;
+import io.github.skippyall.minions.program.InstructionRuntime;
 import io.github.skippyall.minions.program.value.ValueType;
 import net.minecraft.server.network.ServerPlayerEntity;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.concurrent.CompletableFuture;
 
-public class ValueArgumentType<V> extends SpecificArgumentType<V, ValueArgument<V>> {
-    public ValueArgumentType(ValueType<V> valueType) {
-        super(valueType);
+public class ValueArgumentType<V, R extends InstructionRuntime<R>> extends SpecificArgumentType<V, ValueArgument<V,R>, R> {
+    public ValueArgumentType(ValueType<V> valueType, GenericArgumentType<R> genericType) {
+        super(valueType, genericType);
     }
 
     @Override
-    public GenericArgumentType getGenericArgumentType() {
-        return Arguments.VALUE_ARGUMENT;
-    }
-
-    @Override
-    public Codec<ValueArgument<V>> getArgumentCodec() {
+    public Codec<ValueArgument<V,R>> getArgumentCodec() {
         return valueType.codec().xmap(value -> new ValueArgument<>(this, value), ValueArgument::getValue);
     }
 
     @Override
-    public CompletableFuture<ValueArgument<V>> openArgumentDialog(ServerPlayerEntity player, @Nullable ValueArgument<V> previousArgument) {
+    public CompletableFuture<ValueArgument<V,R>> openArgumentDialog(ServerPlayerEntity player, @Nullable ValueArgument<V,R> previousArgument) {
         return valueType.openValueDialog(
                 player,
                 previousArgument != null ? previousArgument.getValue() : valueType.defaultValue()
diff --git a/src/main/java/io/github/skippyall/minions/program/instruction/ConfiguredInstruction.java b/src/main/java/io/github/skippyall/minions/program/instruction/ConfiguredInstruction.java
index 51efa33..f729f08 100644
--- a/src/main/java/io/github/skippyall/minions/program/instruction/ConfiguredInstruction.java
+++ b/src/main/java/io/github/skippyall/minions/program/instruction/ConfiguredInstruction.java
@@ -8,28 +8,28 @@ import net.minecraft.storage.ReadView;
 import net.minecraft.storage.WriteView;
 import org.jetbrains.annotations.Nullable;
 
-public class ConfiguredInstruction<R> {
-    private final InstructionType<R> instruction;
-    private final ArgumentList arguments;
-    private @Nullable InstructionExecution<R> execution;
+public class ConfiguredInstruction<Return,R> {
+    private final InstructionType<Return,R> instruction;
+    private final ArgumentList<R> arguments;
+    private @Nullable InstructionExecution<Return, R> execution;
     private final String name;
 
-    private ConfiguredInstruction(InstructionType<R> instruction, ArgumentList arguments, @Nullable InstructionExecution<R> execution, String name) {
+    private ConfiguredInstruction(InstructionType<Return,R> instruction, ArgumentList<R> arguments, @Nullable InstructionExecution<Return,R> execution, String name) {
         this.instruction = instruction;
         this.arguments = arguments;
         this.execution = execution;
         this.name = name;
     }
 
-    public ConfiguredInstruction(InstructionType<R> instruction, String name) {
-        this(instruction, new ArgumentList(), null, name);
+    public ConfiguredInstruction(InstructionType<Return,R> instruction, String name) {
+        this(instruction, new ArgumentList<>(), null, name);
     }
 
-    public InstructionType<R> getInstruction() {
+    public InstructionType<Return,R> getInstruction() {
         return instruction;
     }
 
-    public ArgumentList getArguments() {
+    public ArgumentList<R> getArguments() {
         return arguments;
     }
 
@@ -45,11 +45,11 @@ public class ConfiguredInstruction<R> {
         return execution != null;
     }
 
-    public @Nullable InstructionExecution<R> getExecution() {
+    public @Nullable InstructionExecution<Return,R> getExecution() {
         return execution;
     }
 
-    public void run(MinionFakePlayer minion) {
+    public void run(R minion) {
         if(canRun() && !isRunning()) {
             try {
                 execution = instruction.createExecution(arguments, minion);
@@ -61,7 +61,7 @@ public class ConfiguredInstruction<R> {
         }
     }
 
-    public void tick(MinionFakePlayer minion) {
+    public void tick(R minion) {
         if(isRunning()) {
             if(execution.isDone(minion)) {
                 stop(minion);
@@ -74,14 +74,14 @@ public class ConfiguredInstruction<R> {
         }
     }
 
-    public void stop(MinionFakePlayer minion) {
+    public void stop(R minion) {
         if(isRunning()) {
             execution.stop(minion);
             execution = null;
         }
     }
 
-    public void save(WriteView view, MinionFakePlayer minion) {
+    public void save(WriteView view, R minion) {
         view.put("instruction", MinionRegistries.INSTRUCTION_TYPES.getCodec(), instruction);
         view.put("arguments", ArgumentList.CODEC, arguments);
         view.putBoolean("running", isRunning());
@@ -90,18 +90,18 @@ public class ConfiguredInstruction<R> {
         }
     }
 
-    public static <R> ConfiguredInstruction<R> load(ReadView view, MinionFakePlayer minion, String name) {
+    public static <Return,R> ConfiguredInstruction<Return,R> load(ReadView view, R minion, String name) {
         //noinspection unchecked
-        InstructionType<R> instructionType = (InstructionType<R>) view.read("instruction", MinionRegistries.INSTRUCTION_TYPES.getCodec()).orElseThrow();
+        InstructionType<Return,R> instructionType = (InstructionType<Return,R>) view.read("instruction", MinionRegistries.INSTRUCTION_TYPES.getCodec()).orElseThrow();
 
-        ArgumentList arguments = view.read("arguments", ArgumentList.CODEC).orElseThrow();
+        ArgumentList<R> arguments = view.read("arguments", ArgumentList.get).orElseThrow();
 
         boolean running = view.getBoolean("running", false);
 
         if(running) {
             ReadView executionView = view.getReadView("execution");
             try {
-                InstructionExecution<R> execution = instructionType.loadExecution(executionView, minion);
+                InstructionExecution<Return,R> execution = instructionType.loadExecution(executionView, minion);
                 return new ConfiguredInstruction<>(instructionType, arguments, execution, name);
             } catch (Exception e) {
 
diff --git a/src/main/java/io/github/skippyall/minions/program/instruction/InstructionExecution.java b/src/main/java/io/github/skippyall/minions/program/instruction/InstructionExecution.java
index ff68335..3446482 100644
--- a/src/main/java/io/github/skippyall/minions/program/instruction/InstructionExecution.java
+++ b/src/main/java/io/github/skippyall/minions/program/instruction/InstructionExecution.java
@@ -1,6 +1,5 @@
 package io.github.skippyall.minions.program.instruction;
 
-import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
 import io.github.skippyall.minions.program.argument.ArgumentList;
 import net.minecraft.storage.ReadView;
 import net.minecraft.storage.WriteView;
@@ -9,55 +8,52 @@ import net.minecraft.storage.WriteView;
  * Responsible for executing instructions.
  * When an instruction is executed:
  * <li>A new instance is created using the factory</li>
- * <li>{@link InstructionExecution#readArguments(ArgumentList, MinionFakePlayer) readFromParameters} is called</li>
- * <li>{@link InstructionExecution#start(MinionFakePlayer) start} is called</li>
- * @param <R>
+ * <li>{@link InstructionExecution#readArguments(ArgumentList, R) readFromParameters} is called</li>
+ * <li>{@link InstructionExecution#start(R) start} is called</li>
+ * @param <Return>
  */
-public interface InstructionExecution<R> {
+public interface InstructionExecution<Return, R> {
     /**
      * Starts the execution.
-     * @param minion
      */
-    default void start(MinionFakePlayer minion) {}
+    default void start(R runtime) {}
 
     /**
      * Continues the execution of this instruction.
      * Called every tick while executing the instruction.
-     * @param minion
      */
-    default void tick(MinionFakePlayer minion) {}
+    default void tick(R runtime) {}
 
     /**
      * Called every tick to determine if the execution of this instruction should be stopped.
-     * @param minion The minion executing the instruction
      * @return <code>true</code> if the instruction is done, <code>false</code> otherwise.
      */
-    boolean isDone(MinionFakePlayer minion);
+    boolean isDone(R runtime);
 
     /**
      * Stops this execution. Is called when isDone returns true, but it may also be called before that.
      * In this case, the return value is ignored.
      * This should undo changes to the minion unless they are supposed to be permanent.
      *
-     * @param minion The minion that was executing this instruction.
+     * @param runtime The runtime that was executing this instruction.
      * @return The return value of the instruction
      */
-    R stop(MinionFakePlayer minion);
+    Return stop(R runtime);
 
     /**
      * Initializes the execution with its arguments.
      * @param arguments The arguments to initialize the execution
-     * @param minion The minion should be used to resolve the arguments
+     * @param runtime The runtime should be used to resolve the arguments
      */
-    void readArguments(ArgumentList arguments, MinionFakePlayer minion);
+    void readArguments(ArgumentList<R> arguments, R runtime);
 
     /**
      * Saves the execution, e.g. when the server is closed.
      */
-    void save(WriteView view, MinionFakePlayer minion);
+    void save(WriteView view, R runtime);
 
     /**
      * Loads the execution, e.g. when the server is started.
      */
-    void load(ReadView view, MinionFakePlayer minion);
+    void load(ReadView view, R runtime);
 }
diff --git a/src/main/java/io/github/skippyall/minions/program/instruction/InstructionType.java b/src/main/java/io/github/skippyall/minions/program/instruction/InstructionType.java
index e20d6ea..d057809 100644
--- a/src/main/java/io/github/skippyall/minions/program/instruction/InstructionType.java
+++ b/src/main/java/io/github/skippyall/minions/program/instruction/InstructionType.java
@@ -2,33 +2,36 @@ package io.github.skippyall.minions.program.instruction;
 
 import io.github.skippyall.minions.gui.GuiDisplay;
 import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
+import io.github.skippyall.minions.program.InstructionRuntime;
 import io.github.skippyall.minions.program.argument.Parameter;
 import io.github.skippyall.minions.program.argument.ArgumentList;
 import io.github.skippyall.minions.program.value.ValueType;
+import net.minecraft.network.codec.PacketCodec;
+import net.minecraft.recipe.Recipe;
 import net.minecraft.storage.ReadView;
 
 import java.util.Collection;
 import java.util.List;
 import java.util.function.Supplier;
 
-public final class InstructionType<R> {
+public class InstructionType<Return, R extends InstructionRuntime<R>> {
     private final GuiDisplay display;
     private final Collection<Parameter<?>> parameters;
-    private final ValueType<R> returnType;
-    private final Supplier<InstructionExecution<R>> executionFactory;
+    private final ValueType<Return> returnType;
+    private final Supplier<InstructionExecution<Return,R>> executionFactory;
 
-    private InstructionType(GuiDisplay display, Supplier<InstructionExecution<R>> executionFactory, ValueType<R> returnType, Collection<Parameter<?>> parameters) {
+    private InstructionType(GuiDisplay display, Supplier<InstructionExecution<Return,R>> executionFactory, ValueType<Return> returnType, Collection<Parameter<?>> parameters) {
         this.display = display;
         this.parameters = parameters;
         this.returnType = returnType;
         this.executionFactory = executionFactory;
     }
 
-    public static <R> InstructionType<R> create(GuiDisplay display, Supplier<InstructionExecution<R>> executionFactory, ValueType<R> returnType, Collection<Parameter<?>> parameters) {
+    public static <Return,R extends InstructionRuntime<R>> InstructionType<Return,R> create(GuiDisplay display, Supplier<InstructionExecution<Return,R>> executionFactory, ValueType<Return> returnType, Collection<Parameter<?>> parameters) {
         return new InstructionType<>(display, executionFactory, returnType, List.copyOf(parameters));
     }
 
-    public static <R> InstructionType<R> create(GuiDisplay display, Supplier<InstructionExecution<R>> executionFactory, ValueType<R> returnType, Parameter<?>... parameters) {
+    public static <Return,R extends InstructionRuntime<R>> InstructionType<Return,R> create(GuiDisplay display, Supplier<InstructionExecution<Return,R>> executionFactory, ValueType<Return> returnType, Parameter<?>... parameters) {
         return new InstructionType<>(display, executionFactory, returnType, List.of(parameters));
     }
 
@@ -36,7 +39,7 @@ public final class InstructionType<R> {
         return parameters;
     }
 
-    public ValueType<R> getReturnType() {
+    public ValueType<Return> getReturnType() {
         return returnType;
     }
 
@@ -44,14 +47,14 @@ public final class InstructionType<R> {
         return display;
     }
 
-    public InstructionExecution<R> createExecution(ArgumentList parameters, MinionFakePlayer minion) {
-        InstructionExecution<R> execution = executionFactory.get();
+    public InstructionExecution<Return,R> createExecution(ArgumentList<R> parameters, R minion) {
+        InstructionExecution<Return,R> execution = executionFactory.get();
         execution.readArguments(parameters, minion);
         return execution;
     }
 
-    public InstructionExecution<R> loadExecution(ReadView view, MinionFakePlayer minion) {
-        InstructionExecution<R> execution = executionFactory.get();
+    public InstructionExecution<Return,R> loadExecution(ReadView view, R minion) {
+        InstructionExecution<Return,R> execution = executionFactory.get();
         execution.load(view, minion);
         return execution;
     }
diff --git a/src/main/java/io/github/skippyall/minions/program/instruction/Instructions.java b/src/main/java/io/github/skippyall/minions/program/instruction/Instructions.java
index 554d9eb..349df47 100644
--- a/src/main/java/io/github/skippyall/minions/program/instruction/Instructions.java
+++ b/src/main/java/io/github/skippyall/minions/program/instruction/Instructions.java
@@ -4,6 +4,7 @@ import io.github.skippyall.minions.MinionRegistries;
 import io.github.skippyall.minions.Minions;
 import io.github.skippyall.minions.gui.GuiDisplay;
 import io.github.skippyall.minions.minion.fakeplayer.EntityPlayerActionPack;
+import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
 import io.github.skippyall.minions.program.instruction.execution.ActionExecution;
 import io.github.skippyall.minions.program.instruction.execution.WalkExecution;
 import io.github.skippyall.minions.program.argument.Parameter;
@@ -18,7 +19,7 @@ import java.util.function.Function;
 import java.util.function.Supplier;
 
 public class Instructions {
-    public static final InstructionType<Void> WALK = register(
+    public static final InstructionType<Void, MinionFakePlayer> WALK = register(
             "walk",
             base -> new GuiDisplay.ModelBased(ModelIdUtil.getItemModelId(Items.IRON_BOOTS), base, true),
             WalkExecution::new,
@@ -26,21 +27,21 @@ public class Instructions {
             WalkExecution.blocksToMoveParam
     );
 
-    public static final InstructionType<Void> ATTACK = register(
+    public static final InstructionType<Void, MinionFakePlayer> ATTACK = register(
             "attack",
             base -> new GuiDisplay.ModelBased(ModelIdUtil.getItemModelId(Items.IRON_BOOTS), base, true),
             () -> new ActionExecution(EntityPlayerActionPack.ActionType.ATTACK),
             ValueTypes.VOID
     );
 
-    public static final InstructionType<Void> USE = register(
+    public static final InstructionType<Void, MinionFakePlayer> USE = register(
             "use",
             base -> new GuiDisplay.ModelBased(ModelIdUtil.getItemModelId(Items.LEVER), base, true),
             () -> new ActionExecution(EntityPlayerActionPack.ActionType.USE),
             ValueTypes.VOID
     );
 
-    private static <R> InstructionType<R> register(String id, Function<String, GuiDisplay> displayFunction, Supplier<InstructionExecution<R>> factory, ValueType<R> returnType, Parameter<?>... parameters) {
+    private static <R> InstructionType<R, MinionFakePlayer> register(String id, Function<String, GuiDisplay> displayFunction, Supplier<InstructionExecution<R,MinionFakePlayer>> factory, ValueType<R> returnType, Parameter<?>... parameters) {
         Identifier identifier = Identifier.of(Minions.MOD_ID, id);
         return Registry.register(MinionRegistries.INSTRUCTION_TYPES, identifier, InstructionType.create(displayFunction.apply(identifier.toTranslationKey("instruction_type")), factory, returnType, parameters));
     }
diff --git a/src/main/java/io/github/skippyall/minions/program/instruction/execution/ContinuousInstructionExecution.java b/src/main/java/io/github/skippyall/minions/program/instruction/execution/ContinuousInstructionExecution.java
index bde65ac..b2c953c 100644
--- a/src/main/java/io/github/skippyall/minions/program/instruction/execution/ContinuousInstructionExecution.java
+++ b/src/main/java/io/github/skippyall/minions/program/instruction/execution/ContinuousInstructionExecution.java
@@ -3,7 +3,7 @@ package io.github.skippyall.minions.program.instruction.execution;
 import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
 import io.github.skippyall.minions.program.instruction.InstructionExecution;
 
-public interface ContinuousInstructionExecution extends InstructionExecution<Void> {
+public interface ContinuousInstructionExecution extends InstructionExecution<Void,MinionFakePlayer> {
     @Override
     default boolean isDone(MinionFakePlayer minion) {
         return false;
diff --git a/src/main/java/io/github/skippyall/minions/program/instruction/execution/TimedInstructionExecution.java b/src/main/java/io/github/skippyall/minions/program/instruction/execution/TimedInstructionExecution.java
index f06c450..3eb56d5 100644
--- a/src/main/java/io/github/skippyall/minions/program/instruction/execution/TimedInstructionExecution.java
+++ b/src/main/java/io/github/skippyall/minions/program/instruction/execution/TimedInstructionExecution.java
@@ -10,7 +10,7 @@ import net.minecraft.storage.WriteView;
  * The timer must be set with <code>setTimer</code> when reading from parameters.
  * Saving and loading of the timer is automatic if the super method is called by the subclass.
  */
-public abstract class TimedInstructionExecution<T> implements InstructionExecution<T> {
+public abstract class TimedInstructionExecution<T> implements InstructionExecution<T,MinionFakePlayer> {
     int timer;
 
     public int getTimer() {
diff --git a/src/main/java/io/github/skippyall/minions/program/instruction/execution/TurnExecution.java b/src/main/java/io/github/skippyall/minions/program/instruction/execution/TurnExecution.java
index fcf1f20..273563e 100644
--- a/src/main/java/io/github/skippyall/minions/program/instruction/execution/TurnExecution.java
+++ b/src/main/java/io/github/skippyall/minions/program/instruction/execution/TurnExecution.java
@@ -14,7 +14,7 @@ import net.minecraft.util.StringIdentifiable;
 
 import java.util.UUID;
 
-public class TurnExecution implements InstructionExecution<Void> {
+public class TurnExecution implements InstructionExecution<Void,MinionFakePlayer> {
     public static final Parameter<Float> ANGLE = new Parameter<>("maxAngle", ValueTypes.FLOAT);
     public static final Parameter<TurnDirection> DIRECTION = new Parameter<>("direction", ValueTypes.TURN_DIRECTION);
 
@@ -43,7 +43,7 @@ public class TurnExecution implements InstructionExecution<Void> {
     }
 
     @Override
-    public void readArguments(ArgumentList arguments, MinionFakePlayer minion) {
+    public void readArguments(ArgumentList<MinionFakePlayer> arguments, MinionFakePlayer minion) {
         maxAngle = arguments.getValue(ANGLE, minion);
         direction = arguments.getValue(DIRECTION, minion);
     }
diff --git a/src/main/java/io/github/skippyall/minions/program/instruction/execution/WalkExecution.java b/src/main/java/io/github/skippyall/minions/program/instruction/execution/WalkExecution.java
index 1d5e9fa..a2ba949 100644
--- a/src/main/java/io/github/skippyall/minions/program/instruction/execution/WalkExecution.java
+++ b/src/main/java/io/github/skippyall/minions/program/instruction/execution/WalkExecution.java
@@ -9,7 +9,7 @@ import net.minecraft.entity.MovementType;
 import net.minecraft.storage.ReadView;
 import net.minecraft.storage.WriteView;
 
-public class WalkExecution implements InstructionExecution<Void> {
+public class WalkExecution implements InstructionExecution<Void,MinionFakePlayer> {
     public static final Parameter<Float> blocksToMoveParam = new Parameter<>("blocksToMove", ValueTypes.FLOAT);
     private final float ACCURACY = 1F / 32F;
 
@@ -34,7 +34,7 @@ public class WalkExecution implements InstructionExecution<Void> {
     }
 
     @Override
-    public void readArguments(ArgumentList parameters, MinionFakePlayer minion) {
+    public void readArguments(ArgumentList<MinionFakePlayer> parameters, MinionFakePlayer minion) {
         totalBlocksToMove = parameters.getValue(blocksToMoveParam, minion);
         blocksMoved = 0;
     }
diff --git a/src/main/java/io/github/skippyall/minions/program/returnvalue/GenericValueConsumerType.java b/src/main/java/io/github/skippyall/minions/program/returnvalue/GenericValueConsumerType.java
new file mode 100644
index 0000000..850300f
--- /dev/null
+++ b/src/main/java/io/github/skippyall/minions/program/returnvalue/GenericValueConsumerType.java
@@ -0,0 +1,19 @@
+package io.github.skippyall.minions.program.returnvalue;
+
+import io.github.skippyall.minions.program.InstructionRuntime;
+import io.github.skippyall.minions.program.argument.Argument;
+import io.github.skippyall.minions.program.argument.SpecificArgumentType;
+import io.github.skippyall.minions.program.value.ValueType;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+
+public interface GenericValueConsumerType<R extends InstructionRuntime<R>> {
+    default <V> SpecificValueConsumerType<V, ? extends ValueConsumer<V, ?, R>, R> createTypeSpecific(ValueType<V> valueType) {
+        return createTypeSpecific(valueType, this);
+    }
+
+    <V> SpecificValueConsumerType<V, ? extends Argument<V, ?, R>, R> createTypeSpecific(ValueType<V> valueType, GenericValueConsumerType<R> me);
+
+    default boolean canCreate(ValueType<?> valueType) {
+        return true;
+    }
+}
diff --git a/src/main/java/io/github/skippyall/minions/program/returnvalue/ReturnValueList.java b/src/main/java/io/github/skippyall/minions/program/returnvalue/ReturnValueList.java
new file mode 100644
index 0000000..6db8ac7
--- /dev/null
+++ b/src/main/java/io/github/skippyall/minions/program/returnvalue/ReturnValueList.java
@@ -0,0 +1,57 @@
+package io.github.skippyall.minions.program.returnvalue;
+
+import com.mojang.serialization.Codec;
+import io.github.skippyall.minions.program.InstructionRuntime;
+import io.github.skippyall.minions.program.argument.Argument;
+import io.github.skippyall.minions.program.argument.Arguments;
+import io.github.skippyall.minions.program.argument.GenericArgumentType;
+import io.github.skippyall.minions.program.argument.Parameter;
+import io.github.skippyall.minions.program.argument.SpecificArgumentType;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+
+public class ReturnValueList<R extends InstructionRuntime<R>> {
+    private final Map<String, ValueConsumer<?, ?, R>> arguments;
+
+    public ReturnValueList() {
+        arguments = new HashMap<>();
+    }
+
+    public ReturnValueList(Map<String, ValueConsumer<?,?, R>> arguments) {
+        this.arguments = new HashMap<>(arguments);
+    }
+
+    public <T> T getValue(Parameter<T> parameter, R runtime) {
+        Argument<T,?,R> argument = getArgument(parameter);
+        return argument != null ? argument.resolve(runtime) : null;
+    }
+
+    public <T, A extends Argument<T, ? extends SpecificArgumentType<T,A,R>,R>> A getArgument(Parameter<T> parameter) {
+        Argument<?, ?,R> argument = arguments.get(parameter.name());
+        return argument == null ? null : argument.cast(parameter.type());
+    }
+
+    public <T> void setArgument(Parameter<T> parameter, Argument<T,?,R> argument) {
+        arguments.put(parameter.name(), argument);
+    }
+
+    public boolean hasArgumentFor(Parameter<?> parameter) {
+        return getArgument(parameter) != null;
+    }
+
+    public boolean hasArgumentForAll(Collection<Parameter<?>> checkParameters) {
+        for(Parameter<?> parameter : checkParameters) {
+            if(!hasArgumentFor(parameter)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public static <R extends InstructionRuntime<R>> Codec<ReturnValueList<R>> getCodec(Codec<GenericArgumentType<R>> genericCodec) {
+        return Codec.unboundedMap(Codec.STRING, Arguments.createArgumentCodec(genericCodec))
+                .xmap(ReturnValueList::new, list -> list.arguments);
+    }
+}
diff --git a/src/main/java/io/github/skippyall/minions/program/returnvalue/SpecificValueConsumerType.java b/src/main/java/io/github/skippyall/minions/program/returnvalue/SpecificValueConsumerType.java
new file mode 100644
index 0000000..74cf27c
--- /dev/null
+++ b/src/main/java/io/github/skippyall/minions/program/returnvalue/SpecificValueConsumerType.java
@@ -0,0 +1,39 @@
+package io.github.skippyall.minions.program.returnvalue;
+
+import com.mojang.serialization.Codec;
+import io.github.skippyall.minions.program.InstructionRuntime;
+import io.github.skippyall.minions.program.argument.Argument;
+import io.github.skippyall.minions.program.argument.GenericArgumentType;
+import io.github.skippyall.minions.program.value.ValueType;
+import net.minecraft.server.network.ServerPlayerEntity;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.concurrent.CompletableFuture;
+
+/**
+ * <code>SpecificArgumentType</code>s create <code>Argument</code>s of the specified <code>ValueType</code>.
+ * They are also responsible for the serialization and user input of arguments.
+ * @param <V> The value type of the <code>Argument</code>s to create
+ * @param <A> The type of the <code>Argument</code>s themselves
+ */
+public abstract class SpecificValueConsumerType<V, A extends ValueConsumer<V, ? extends SpecificValueConsumerType<V, A, R>, R>, R extends InstructionRuntime<R>> {
+    public final ValueType<V> valueType;
+    public final GenericArgumentType<R> genericType;
+
+    public SpecificValueConsumerType(ValueType<V> valueType, GenericArgumentType<R> genericType) {
+        this.valueType = valueType;
+        this.genericType = genericType;
+    }
+
+    public abstract Codec<A> getValueConsumerCodec();
+
+    public abstract CompletableFuture<A> openValueConsumerDialog(ServerPlayerEntity player, @Nullable A previousArgument);
+
+    public ValueType<V> getValueType() {
+        return valueType;
+    }
+
+    public GenericArgumentType<R> getGenericArgumentType() {
+        return genericType;
+    }
+}
diff --git a/src/main/java/io/github/skippyall/minions/program/returnvalue/ValueConsumer.java b/src/main/java/io/github/skippyall/minions/program/returnvalue/ValueConsumer.java
new file mode 100644
index 0000000..66a0ac8
--- /dev/null
+++ b/src/main/java/io/github/skippyall/minions/program/returnvalue/ValueConsumer.java
@@ -0,0 +1,35 @@
+package io.github.skippyall.minions.program.returnvalue;
+
+import io.github.skippyall.minions.gui.GuiDisplay;
+import io.github.skippyall.minions.program.InstructionRuntime;
+import io.github.skippyall.minions.program.argument.SpecificArgumentType;
+import io.github.skippyall.minions.program.value.ValueType;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * An <code>Argument</code> can be supplied to an instruction with a matching parameter.
+ * Its value is resolved at runtime and can vary between executions.
+ * <code>Argument</code>s are created exclusively by <code>SpecificArgumentType</code>s.
+ * @param <T> The type of the <code>Argument</code>'s value
+ * @param <S> The <code>SpecificArgumentType</code>
+ */
+public interface ValueConsumer<T, S extends SpecificValueConsumerType<T, ? extends ValueConsumer<T, S, R>, R>, R extends InstructionRuntime<R>> {
+    void consume(T value, R runtime);
+
+    default ValueType<T> getValueType() {
+        return getType().getValueType();
+    }
+
+    GuiDisplay getDisplay();
+
+    S getType();
+
+    default <U, A extends io.github.skippyall.minions.program.argument.Argument<U, ? extends SpecificArgumentType<U,A,R>, R>> @Nullable A cast(ValueType<U> type) {
+        if(getValueType() == type) {
+            //noinspection unchecked
+            return (A) this;
+        } else {
+            return null;
+        }
+    }
+}