code: protected <Type extends JvmType> Type findDeclaredType(Class<?> clazz, ITypeReferenceOwner owner) {
  		@SuppressWarnings("unchecked")
  		Type result = (Type) services.getTypeReferences().findDeclaredType(clazz, owner.getContextResourceSet());
  		return result;
  	}
docs: /* @Nullable