docs: def to_json(self):
          """
          Serialize object to json dict
  
          :return: dict
          """
          data = dict()
          data['InterlocutorId'] = self.id_
          data['Text'] = self.text
          data['Username'] = self.username
          data['FirstName'] = self.first_name
          data['LastName'] = self.last_name
          return data