old_contents: from model import BaseModel
  
  from feature import Feature,JSONFeature,TextFeature,CompressedFeature,PickleFeature
  
  from extractor import Node,Graph,Aggregator,NotEnoughData
  
  from bytestream import ByteStream,ByteStreamFeature
  
  from data import \
  IdProvider,UuidProvider,UserSpecifiedIdProvider,KeyBuilder\
  ,StringDelimitedKeyBuilder,Database,DataWriter\
  ,FileSystemDatabase,InMemoryDatabase
  
  from dependency_injection import Registry,dependency,register
  
  from nmpy import StreamingNumpyDecoder, NumpyMetaData
  
  from database_iterator import DatabaseIterator
  
  from decoder import Decoder
  
  from lmdbstore import LmdbDatabase
new_contents: from model import BaseModel
  
  from feature import Feature,JSONFeature,TextFeature,CompressedFeature,PickleFeature
  
  from extractor import Node,Graph,Aggregator,NotEnoughData
  
  from bytestream import ByteStream,ByteStreamFeature
  
  from data import \
  IdProvider,UuidProvider,UserSpecifiedIdProvider,KeyBuilder\
  ,StringDelimitedKeyBuilder,Database,DataWriter\
  ,FileSystemDatabase,InMemoryDatabase
  
  from dependency_injection import Registry,dependency,register
  
  from nmpy import StreamingNumpyDecoder, NumpyMetaData
  
  from database_iterator import DatabaseIterator
  
  from encoder import IdentityEncoder
  
  from decoder import Decoder
  
  from lmdbstore import LmdbDatabase
subject: Add IdentityEncoder to top-level exports