fix-grpc-aio-handler

Author: XiaXia009

stubs/grpcio/grpc/aio/__init__.pyi

@@ -370,7 +370,8 @@ class StreamStreamClientInterceptor(ClientInterceptor, metaclass=abc.ABCMeta):
 
 # Service-Side Handler:
 
-class RpcMethodHandler(Generic[_TRequest, _TResponse], metaclass=abc.ABCMeta):
+@type_check_only
+class RpcMethodHandler(Generic[_TRequest, _TResponse]):
     request_streaming: bool
     response_streaming: bool
 
@@ -380,7 +381,9 @@ class RpcMethodHandler(Generic[_TRequest, _TResponse], metaclass=abc.ABCMeta):
     unary_unary: Callable[[_TRequest, ServicerContext[_TRequest, _TResponse]], Awaitable[_TResponse]] | None
     unary_stream: Callable[[_TRequest, ServicerContext[_TRequest, _TResponse]], AsyncIterator[_TResponse]] | None
     stream_unary: Callable[[AsyncIterator[_TRequest], ServicerContext[_TRequest, _TResponse]], Awaitable[_TResponse]] | None
-    stream_stream: Callable[[AsyncIterator[_TRequest], ServicerContext[_TRequest, _TResponse]], AsyncIterator[_TResponse]] | None
+    stream_stream: Callable[
+        [AsyncIterator[_TRequest], ServicerContext[_TRequest, _TResponse]], AsyncIterator[_TResponse]
+    ] | None
 
 # Server-Side Interceptor: