public String getString() {
        Object ref = string_;
        if (!(ref instanceof String)) {
          com.google.protobuf.ByteString bs =
              (com.google.protobuf.ByteString) ref;
          String s = bs.toStringUtf8();
          string_ = s;
          return s;
        } else {
          return (String) ref;
        }
      }
<code>string string = 14;</code>
@return The string.
core/src/test/java/com/alibaba/fastjson2/dubbo/GoogleProtobufBasic.java