GLib.IOChannel.prototype.seek

function seek(offset: Number(gint64), type: GLib.SeekType): GLib.IOError {
    // Gjs wrapper for g_io_channel_seek()
}

Sets the current position in the GLib.IOChannel, similar to the standard library function fseek().

offset: an offset, in bytes, which is added to the position specified by type
type: the position in the file, which can be GLib.SeekType.cur (the current position), GLib.SeekType.set (the start of the file), or GLib.SeekType.end (the end of the file)
Returns: GLib.IOError.none if the operation was successful.