code: def set_data_and_metadata(self, data_and_metadata, data_modified=None):
          
          self.increment_data_ref_count()
          try:
              if data_and_metadata:
                  data = data_and_metadata.data
                  data_shape_and_dtype = data_and_metadata.data_shape_and_dtype
                  intensity_calibration = data_and_metadata.intensity_calibration
                  dimensional_calibrations = data_and_metadata.dimensional_calibrations
                  metadata = data_and_metadata.metadata
                  timestamp = data_and_metadata.timestamp
                  data_descriptor = data_and_metadata.data_descriptor
                  timezone = data_and_metadata.timezone or Utility.get_local_timezone()
                  timezone_offset = data_and_metadata.timezone_offset or Utility.TimezoneMinutesToStringConverter().convert(Utility.local_utcoffset_minutes())
                  new_data_and_metadata = DataAndMetadata.DataAndMetadata(self.__load_data, data_shape_and_dtype, intensity_calibration, dimensional_calibrations, metadata, timestamp, data, data_descriptor, timezone, timezone_offset)
              else:
                  new_data_and_metadata = None
              self.__set_data_metadata_direct(new_data_and_metadata, data_modified)
              if self.__data_and_metadata is not None:
                  if self.persistent_object_context and not self.persistent_object_context.is_write_delayed(self):
                      self.persistent_object_context.write_external_data(self, "data", self.__data_and_metadata.data)
                      self.__data_and_metadata.unloadable = True
          finally:
              self.decrement_data_ref_count()
docs: Sets the underlying data and data-metadata to the data_and_metadata.
  
          Note: this does not make a copy of the data.