code: def is_all_field_none(self):
          
  
          if self._UserLight is not None:
              return False
  
          if self._UserPerson is not None:
              return False
  
          if self._UserCompany is not None:
              return False
  
          if self._UserApiKey is not None:
              return False
  
          return True
docs: :rtype: bool