code: def _minimum_one_is_missing(self, **kwargs):
          
          rqset = self._meta_data['minimum_additional_parameters']
          if rqset:
              kwarg_set = set(iterkeys(kwargs))
              if kwarg_set.isdisjoint(rqset):
                  args = sorted(rqset)
                  error_message = 'This resource requires at least one of the ' \
                                  'mandatory additional ' \
                                  'parameters to be provided: %s' % ', '.join(args)
                  raise MissingRequiredCreationParameter(error_message)
docs: Helper function to do operation on sets
  
          Verify if at least one of the elements
          is present in **kwargs. If no items of rqset
          are contained in **kwargs  the function
          raises exception.
  
          This check will only trigger if rqset is not empty.
  
          Raises:
               MissingRequiredCreationParameter