code: def loads(data, metadata=None, scoped_session=None, engine=None):
      buf = BytesIO(data)
      unpickler = Deserializer(buf, metadata, scoped_session, engine)
      return unpickler.load()
  
file_path: sqlalchemy/lib/sqlalchemy/ext/serializer.py
imports: from io import BytesIO
  import pickle
  import re
  from ..None import Column
  from ..None import Table
  from ..engine import Engine
  from ..orm import class_mapper
  from ..orm.interfaces import MapperProperty
  from ..orm.mapper import Mapper
  from ..orm.session import Session
  from ..util import b64decode
  from ..util import b64encode
label_desc: Use image node_id 4 for calling a global function with example usage: loads(data, metadata, scoped_session, engine) and returns: unpickler