loadAsync
open fun loadAsync(size: <Error class: unknown class>, cancellable: Cancellable? = null, callback: AsyncReadyCallback?)
Loads an icon asynchronously. To finish this function, see g_loadable_icon_load_finish(). For the synchronous, blocking version of this function, see g_loadable_icon_load().
Parameters
size
an integer.
cancellable
optional #GCancellable object, null to ignore.
callback
a #GAsyncReadyCallback to call when the request is satisfied