code: def validate_query_params(self, strict=True):
          
          if not (self.api_key or default_api_key):
              raise ValueError('API key is missing')
          if strict and self.query_params_mode not in (None, 'and', 'or'):
              raise ValueError('query_params_match should be one of "and"/"or"')
          if not self.person.is_searchable:
              raise ValueError('No valid name/username/phone/email in request')
          if strict and self.person.unsearchable_fields:
              raise ValueError('Some fields are unsearchable: %s' 
                               % self.person.unsearchable_fields)
docs: Check if the request is valid and can be sent, raise ValueError if 
          not.
          
          `strict` is a boolean argument that defaults to True which means an 
          exception is raised on every invalid query parameter, if set to False
          an exception is raised only when the search request cannot be performed
          because required query params are missing.