c_gtk_icon_theme_load_icon

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
GdkPixbuf* function(GtkIconTheme* iconTheme, const(char)* iconName, int size, GtkIconLookupFlags flags, GError** err) c_gtk_icon_theme_load_icon;

Meta