a gboolean, returns whether the loaded icon was a symbolic one and whether the fg color was applied to it.
the rendered icon; this may be a newly created icon or a new reference to an internal icon, so you must not modify the icon. Use g_object_unref() to release your reference to the icon.
GException on failure.
3.8
Finishes an async icon load, see IconInfo.loadSymbolicForContextAsync.