Vector version of `gdk_pixbuf_save()`.
Saves pixbuf to a file in `type`, which is currently "jpeg", "png", "tiff", "ico" or "bmp".
error is set, `FALSE` will be returned.
GdkPixbuf.Pixbuf.save] for more details.
name of file to save.
name of file format.
name of options to set
values for named options
whether an error was set