Fix on type hints

libp2p/stream_muxer/muxed_connection_interface.py

@@ -1,11 +1,16 @@
 from abc import ABC, abstractmethod
 
+from libp2p.peer.id import ID
+
 
 class IMuxedConn(ABC):
     """
     reference: https://github.com/libp2p/go-stream-muxer/blob/master/muxer.go
     """
 
+    initiator: bool
+    peer_id: ID
+
     @abstractmethod
     def __init__(self, conn, generic_protocol_handler, peer_id):
         """