Method Inspect

cpp/src/arrow/dataset/file_test.cc:125–127

  bool Equals(const FileFormat& other) const override { return false; }
  Result<bool> IsSupported(const FileSource& source) const override { return true; }
  Result<std::shared_ptr<Schema>> Inspect(const FileSource& source) const override {
    return Status::NotImplemented("Not needed for test");
  }
  Result<std::shared_ptr<FileWriter>> MakeWriter(
      std::shared_ptr<io::OutputStream> destination, std::shared_ptr<Schema> schema,
      std::shared_ptr<FileWriteOptions> options,