@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      if (handleBuilder_ != null) {
        handleBuilder_.clear();
      }
      if (chunkBuilder_ != null) {
        chunkBuilder_.clear();
      }
      fileHandleOrBufferCase_ = 0;
      fileHandleOrBuffer_ = null;
      return this;
    }
@java.lang.Override
    public Builder clear()