@Override
    public String getMethodName() {
        return GreeterGrpc.getSayHelloMethod().getFullMethodName();
    }
copy grpc framework
- https://github.com/grpc/grpc-java/blob/master/examples/src/main/java/io/grpc/examples/helloworld/HelloWorldServer.java

Server that manages startup/shutdown of a {@code Greeter} server.
agent-module/plugins-it/google-grpc-it/google-grpc-1-8-it/src/test/java/com/navercorp/pinpoint/it/plugin/grpc/HelloWorldSimpleServer.java