code: def get_message(self, *parameters):
          
          _, message_fields, header_fields = self._get_parameters_with_defaults(parameters)
          return self._encode_message(message_fields, header_fields)
docs: Get encoded message.
  
          * Send Message -keywords are convenience methods, that will call this to
          get the message object and then send it. Optional parameters are message
          field values separated with colon.
  
          Examples:
          | ${msg} = | Get message |
          | ${msg} = | Get message | field_name:value |