Gio.ZlibCompressor.file_info
ZlibCompressor.file_info: Gio.FileInfo (Read / Write)
If set to a non-null Gio.FileInfo object, and Gio.ZlibCompressor.format is Gio.ZlibCompressorFormat.gzip, the compressor will write the file name and modification time from the file info to the GZIP header.
Since 2.26