code: def from_payload(type_code, payload, connection):
      
      lob_header = ReadLobHeader(payload)
      if lob_header.isnull():
          lob = None
      else:
          data = payload.read(lob_header.chunk_length)
          _LobClass = LOB_TYPE_CODE_MAP[type_code]
          lob = _LobClass.from_payload(data, lob_header, connection)
          logger.debug('Lob Header %r' % lob)
      return lob
docs: Generator function to create lob from payload.
      Depending on lob type a BLOB, CLOB, or NCLOB instance will be returned.
      This function is usually called from types.*LobType.from_resultset()