private MetaData getMetaData() {
        return MetaData.builder()
                .id("1332017977771636096")
                .appName("grpc")
                .contextPath("/grpc").path("/grpc/echo")
                .serviceName("echo.EchoService")
                .methodName("echo")
                .rpcType(RpcTypeEnum.GRPC.getName())
                .rpcExt("{timeout:5000}")
                .parameterTypes("param")
                .enabled(true).build();
    }
The Test Case For {@link GrpcPlugin}.
shenyu-plugin/shenyu-plugin-proxy/shenyu-plugin-rpc/shenyu-plugin-grpc/src/test/java/org/apache/shenyu/plugin/grpc/GrpcPluginTest.java