docs: def QueryRelatedRecords(self, objectIds=None, relationshipId=None,
                              outFields=None, definitionExpression=None,
                              returnGeometry=None, outSR=None):
          """The query operation is performed on a feature service layer
             resource. The result of this operation are featuresets grouped by
             source layer / table object IDs. Each featureset contains Feature
             objects including the values for the fields requested by the user.
             For related layers, if you request geometry information, the
             geometry of each feature is also returned in the featureset. For
             related tables, the featureset does not include geometries."""
  
          out = self._get_subfolder("./queryRelatedRecords", JsonResult, {
                                                          'objectIds':
                                                              objectIds,
                                                          'relationshipId':
                                                              relationshipId,
                                                          'outFields':
                                                              outFields,
                                                          'definitionExpression':
                                                            definitionExpression,
                                                          'returnGeometry':
                                                              returnGeometry,
                                                          'outSR': outSR
                                                  })
          return out._json_struct