Xtext - Creating a Generic type reference

CreateGenericType.java

// Approach 01
@Inject private TypeReferences typeReferences;


private LightweightTypeReference getGenericType(ITypeComputationState state, Class<?> t, Class<?>... t1) {
		var resourceSet = state.getReferenceOwner().getContextResourceSet();
		var rawType = typeReferences.getTypeForName(t, resourceSet).getType();
		var typeParam = typeReferences.getTypeForName(t1[0], resourceSet);
		return state.getReferenceOwner()
			.toLightweightTypeReference(typeReferences.createTypeRef(rawType, typeParam);)
	}

// Approach 02
@Inject private JvmTypeReferenceBuilder.Factory typeRefBuilderFactory;

	private LightweightTypeReference getGenericType(ITypeComputationState state, Class<?> t, Class<?>... t1) {
		var jvmTypeReferenceBuilder = typeRefBuilderFactory.create(resourceSet);
		var parameterizedTypeRef = jvmTypeReferenceBuilder.typeRef(t, jvmTypeReferenceBuilder.typeRef(t1[0]));
		return state.getReferenceOwner().toLightweightTypeReference(parameterizedTypeRef);
	}