[ CCode ( type_id = "g_file_output_stream_get_type ()" ) ]
public class FileOutputStream : OutputStream, Seekable
`GFileOutputStream` provides output streams that write their content to a file.
`GFileOutputStream` implements [iface@Gio.Seekable], which allows the output stream to jump to arbitrary positions in the file and to truncate the file, provided the filesystem of the file supports these operations.
To find the position of a file output stream, use [method@Gio.Seekable.tell]. To find out if a file output stream supports seeking, use [ method@Gio.Seekable.can_seek].To position a file output stream, use [method@Gio.Seekable.seek]. To find out if a file output stream supports truncating, use [method@Gio.Seekable.can_truncate]. To truncate a file output stream, use [method@Gio.Seekable.truncate].