docs: def DeleteFeatures(self, objectIds=None, where=None, geometry=None,
                         inSR=None, spatialRel=None):
          """This operation deletes features in a feature layer or table (POST
             only). The delete features operation is performed on a feature
             service layer resource. The result of this operation is an array
             of edit results. Each edit result identifies a single feature and
             indicates if the edit were successful or not. If not, it also
             includes an error code and an error description."""
          gt = geometry.__geometry_type__
          if sr is None:
              sr = geometry.spatialReference.wkid
          geo_json = json.dumps(Geometry._json_struct_without_sr)
          return self._get_subfolder("./deleteFeatures", JsonPostResult, {
                                                      'objectIds': objectIds,
                                                      'where': where,
                                                      'geometry': geo_json,
                                                      'geometryType':
                                                              geometryType,
                                                      'inSR': inSR,
                                                      'spatialRel': spatialRel
                                      })