public Builder clearOneof(
                                  com.google.protobuf.Descriptors.OneofDescriptor oneof) {
            return (Builder) super.clearOneof(oneof);
        }
Protobuf type {@code com.alipay.sofa.rpc.server.bolt.pb.EchoRequest}
test/test-integration/src/test/java/com/alipay/sofa/rpc/server/bolt/pb/EchoRequest.java