@java.lang.Override
          public TraceServiceFutureStub newStub(
              io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
            return new TraceServiceFutureStub(channel, callOptions);
          }
Creates a new ListenableFuture-style stub that supports unary calls on the service
java-trace/grpc-google-cloud-trace-v1/src/main/java/com/google/devtools/cloudtrace/v1/TraceServiceGrpc.java