add description

Author: asheshvidyut

src/mcp/client/transport_session.py

@@ -18,6 +18,7 @@ async def initialize(self) -> types.InitializeResult:
 
     @abstractmethod
     async def send_ping(self) -> types.EmptyResult:
+        """Send a ping request."""
         raise NotImplementedError
 
     @abstractmethod
@@ -28,6 +29,7 @@ async def send_progress_notification(
         total: float | None = None,
         message: str | None = None,
     ) -> None:
+        """Send a progress notification."""
         raise NotImplementedError
 
     @abstractmethod