public com.alipay.sofa.rpc.protobuf.EchoRequest build() {
            com.alipay.sofa.rpc.protobuf.EchoRequest result = buildPartial();
            if (!result.isInitialized()) {
                throw newUninitializedMessageException(result);
            }
            return result;
        }
Protobuf type {@code com.alipay.sofa.rpc.protobuf.EchoRequest}
example/src/test/java/com/alipay/sofa/rpc/protobuf/EchoRequest.java