TRUE if the specified option is supportedPixbufFormat.isSaveOptionSupported
bool isSaveOptionSupported(string optionKey)Returns TRUE if the save option specified by option_key is supported when saving a pixbuf using the module implementing format.
See [gdkpixbuf.pixbuf.Pixbuf.save] for more information about option keys.
Parameters
optionKey | the name of an option |