old_contents: from message_string_generator import MessageStringGenerator
  from datum import Datum
  from types import TInt, TFloat, TBool, TString, TRaw, TNullable, TList, TMap, TTuple, TUserDef, TObject
  from client import Client, ClientBase, TypeMismatch, UnknownMethod
  
new_contents: from message_string_generator import MessageStringGenerator
  from datum import Datum
  from types import TInt, TFloat, TBool, TString, TRaw, TNullable, TList, TMap, TTuple, TUserDef, TObject
  from client import Client, ClientBase, TypeMismatch, UnknownMethod
  
  from contextlib import contextmanager
  
  @contextmanager
  def connect(cls, host, port, name, timeout=10):
      client = cls(host, port, name, timeout)
      try:
          yield(client)
      finally:
          client.get_client().close()
  
subject: Implement connect method