/* To find the position of a file output stream, use g_seekable_tell(). To find out if a file output stream supports seeking, use g_seekable_can_seek().To position a file output stream, use g_seekable_seek(). To find out if a file output stream supports truncating, use g_seekable_can_truncate(). To truncate a file output stream, use g_seekable_truncate().  */
static void g_file_output_stream_seekable_iface_init(GSeekableIface *iface)
/* To find the position of a file output stream, use g_seekable_tell(). To find out if a file output stream supports seeking, use g_seekable_can_seek().To position a file output stream, use g_seekable_seek(). To find out if a file output stream supports truncating, use g_seekable_can_truncate(). To truncate a file output stream, use g_seekable_truncate().  */
static void g_file_output_stream_seekable_iface_init(GSeekableIface *iface)
{
  iface->tell = g_file_output_stream_seekable_tell;
  iface->can_seek = g_file_output_stream_seekable_can_seek;
  iface->seek = g_file_output_stream_seekable_seek;
  iface->can_truncate = g_file_output_stream_seekable_can_truncate;
  iface->truncate_fn = g_file_output_stream_seekable_truncate;
}