def __init__(self, session, code_data):
self._session = session<EOL>self.code_data = code_data<EOL>self.handle = unpackb(code_data[<NUM_LIT:1>])<EOL>self.api = RemoteApi(self, self._api_prefix)<EOL>self.vars = RemoteMap(self, self._api_prefix + '<STR_LIT>',<EOL>self._api_prefix + '<STR_LIT>')<EOL>self.options = RemoteMap(self, self._api_prefix + '<STR_LIT>',<EOL>self._api_prefix + '<STR_LIT>')<EOL>
Initialize from session and code_data immutable object.

        The `code_data` contains serialization information required for
        msgpack-rpc calls. It must be immutable for Buffer equality to work.