Method appendNull

bolt/serializers/PrestoSerializer.cpp:1364–1373

  }

  void appendNull() {
    if (nonNullCount_ && nullCount_ == 0) {
      nulls_.appendBool(false, nonNullCount_);
    }
    nulls_.appendBool(true, 1);
    ++nullCount_;
    if (hasLengths_) {
      appendLength(0);
    }
  }

  void appendNonNull(int32_t count = 1) {
    if (nullCount_ > 0) {