code: def _PackArguments(self, method_name, args, set_type_attrs=False):
      
      # Get the params for the method to find the initial types to instantiate.
      op_params = self.zeep_client.get_element(
          '{%s}%s' % (self._GetBindingNamespace(), method_name)).type.elements
      result = [self._PackArgumentsHelper(param, param_data, set_type_attrs)
                for ((_, param), param_data) in izip(op_params, args)]
      return result
docs: Properly pack input dictionaries for zeep.
  
      Pack a list of python dictionaries into XML objects. Dictionaries which
      contain an 'xsi_type' entry are converted into that type instead of the
      argument default. This allows creation of complex objects which include
      inherited types.
  
      Args:
        method_name: The name of the method that will be called.
        args: A list of dictionaries containing arguments to the method.
        set_type_attrs: A boolean indicating whether or not attributes that end
          in .Type should be set. This is only necessary for batch job service.
  
      Returns:
        A list of XML objects that can be passed to zeep.