public Builder clear() {
        super.clear();
        stepText_ = "";
        bitField0_ = (bitField0_ & ~0x00000001);
        scenarioFailing_ = false;
        bitField0_ = (bitField0_ & ~0x00000002);
        if (argsBuilder_ == null) {
          args_ = java.util.Collections.emptyList();
          bitField0_ = (bitField0_ & ~0x00000004);
        } else {
          argsBuilder_.clear();
        }
        return this;
      }