code: def get_ref(cls, state, obj_alloc_id, field_class_name, field_name, field_type):
          
          # resolve field
          field_class = state.javavm_classloader.get_class(field_class_name)
          field_id = resolve_field(state, field_class, field_name, field_type)
          # return field ref
          return cls.from_field_id(obj_alloc_id, field_id)
docs: Resolve the field within the given state.