diff --git a/examples/src/multiplex/server.rs b/examples/src/multiplex/server.rs
index 4af338b..d45fb8d 100644
--- a/examples/src/multiplex/server.rs
+++ b/examples/src/multiplex/server.rs
@@ -68,5 +68,27 @@ impl Echo for MyEcho {
     }
 
     type ServerStreamingEchoStream = ResponseStream;
+
+    async fn server_streaming_echo(
+        &self,
+        _: Request<EchoRequest>,
+    ) -> Result<Response<Self::ServerStreamingEchoStream>, Status> {
+        Err(Status::unimplemented("Not yet implemented"))
+    }
+
+    async fn client_streaming_echo(
+        &self,
+        _: Request<tonic::Streaming<EchoRequest>>,
+    ) -> Result<Response<EchoResponse>, Status> {
+        Err(Status::unimplemented("Not yet implemented"))
+    }
+
     type BidirectionalStreamingEchoStream = ResponseStream;
+
+    async fn bidirectional_streaming_echo(
+        &self,
+        _: Request<tonic::Streaming<EchoRequest>>,
+    ) -> Result<Response<Self::BidirectionalStreamingEchoStream>, Status> {
+        Err(Status::unimplemented("Not yet implemented"))
+    }
 }
diff --git a/examples/src/tls_client_auth/server.rs b/examples/src/tls_client_auth/server.rs
index e7e25ba..43061aa 100644
--- a/examples/src/tls_client_auth/server.rs
+++ b/examples/src/tls_client_auth/server.rs
@@ -26,7 +26,29 @@ impl pb::echo_server::Echo for EchoServer {
     }
 
     type ServerStreamingEchoStream = ResponseStream;
+
+    async fn server_streaming_echo(
+        &self,
+        _: Request<EchoRequest>,
+    ) -> Result<Response<Self::ServerStreamingEchoStream>, Status> {
+        Err(Status::unimplemented("Not yet implemented"))
+    }
+
+    async fn client_streaming_echo(
+        &self,
+        _: Request<tonic::Streaming<EchoRequest>>,
+    ) -> Result<Response<EchoResponse>, Status> {
+        Err(Status::unimplemented("Not yet implemented"))
+    }
+
     type BidirectionalStreamingEchoStream = ResponseStream;
+
+    async fn bidirectional_streaming_echo(
+        &self,
+        _: Request<tonic::Streaming<EchoRequest>>,
+    ) -> Result<Response<Self::BidirectionalStreamingEchoStream>, Status> {
+        Err(Status::unimplemented("Not yet implemented"))
+    }
 }
 
 #[tokio::main]
diff --git a/tonic-build/src/server.rs b/tonic-build/src/server.rs
index cb8f52f..81fa052 100644
--- a/tonic-build/src/server.rs
+++ b/tonic-build/src/server.rs
@@ -108,18 +108,14 @@ fn generate_trait_methods(service: &Service, proto_path: &str) -> TokenStream {
                 quote! {
                     #method_doc
                     async fn #name(&self, request: tonic::Request<#req_message>)
-                        -> Result<tonic::Response<#res_message>, tonic::Status> {
-                            Err(tonic::Status::unimplemented("Not yet implemented"))
-                        }
+                        -> Result<tonic::Response<#res_message>, tonic::Status>;
                 }
             }
             (true, false) => {
                 quote! {
                     #method_doc
                     async fn #name(&self, request: tonic::Request<tonic::Streaming<#req_message>>)
-                        -> Result<tonic::Response<#res_message>, tonic::Status> {
-                            Err(tonic::Status::unimplemented("Not yet implemented"))
-                        }
+                        -> Result<tonic::Response<#res_message>, tonic::Status>;
                 }
             }
             (false, true) => {
@@ -135,9 +131,7 @@ fn generate_trait_methods(service: &Service, proto_path: &str) -> TokenStream {
 
                     #method_doc
                     async fn #name(&self, request: tonic::Request<#req_message>)
-                        -> Result<tonic::Response<Self::#stream>, tonic::Status> {
-                            Err(tonic::Status::unimplemented("Not yet implemented"))
-                        }
+                        -> Result<tonic::Response<Self::#stream>, tonic::Status>;
                 }
             }
             (true, true) => {
@@ -153,9 +147,7 @@ fn generate_trait_methods(service: &Service, proto_path: &str) -> TokenStream {
 
                     #method_doc
                     async fn #name(&self, request: tonic::Request<tonic::Streaming<#req_message>>)
-                        -> Result<tonic::Response<Self::#stream>, tonic::Status> {
-                            Err(tonic::Status::unimplemented("Not yet implemented"))
-                        }
+                        -> Result<tonic::Response<Self::#stream>, tonic::Status>;
                 }
             }
         };