Method EncodeMin

cpp/src/parquet/statistics.cc:787–791

  const ColumnDescriptor* descr() const override { return descr_; }

  std::string EncodeMin() const override {
    std::string s;
    if (HasMinMax()) this->PlainEncode(min_, &s);
    return s;
  }

  std::string EncodeMax() const override {
    std::string s;