code: def resolve_parameter_refs(self, input_dict, parameters):
          
          if not self.can_handle(input_dict):
              return input_dict
  
          param_name = input_dict[self.intrinsic_name]
  
          if not isinstance(param_name, string_types):
              return input_dict
  
          if param_name in parameters:
              return parameters[param_name]
          else:
              return input_dict
docs: Resolves references that are present in the parameters and returns the value. If it is not in parameters,
          this method simply returns the input unchanged.
  
          :param input_dict: Dictionary representing the Ref function. Must contain only one key and it should be "Ref".
              Ex: {Ref: "foo"}
  
          :param parameters: Dictionary of parameter values for resolution
          :return: