docs: def clear_elements(sysmeta_pyxb, clear_replica=True, clear_serial_version=True):
      """{clear_replica} causes any replica information to be removed from the object.
  
      {clear_replica} ignores any differences in replica information, as this information
      is often different between MN and CN.
  
      """
      if clear_replica:
          sysmeta_pyxb.replica = None
      if clear_serial_version:
          sysmeta_pyxb.serialVersion = None
  
      sysmeta_pyxb.replicationPolicy = None