code: public static <ReqT, RespT> ServerMethodDefinition<ReqT, RespT> create(
        MethodDescriptor<ReqT, RespT> method,
        ServerCallHandler<ReqT, RespT> handler) {
      return new ServerMethodDefinition<>(method, handler);
    }
docs: Create a new instance.
  
  @param method the {@link MethodDescriptor} for this method.
  @param handler to dispatch calls to.
  @return a new instance.