public com.google.protobuf.ByteString
              getClassNameBytes() {
            java.lang.Object ref = className_;
            if (ref instanceof String) {
              com.google.protobuf.ByteString b = 
                  com.google.protobuf.ByteString.copyFromUtf8(
                      (java.lang.String) ref);
              className_ = b;
              return b;
            } else {
              return (com.google.protobuf.ByteString) ref;
            }
          }
public com.google.protobuf.ByteString
              getClassNameBytes()