The asynchronous version of [method@SearchContext.forward].
See the [iface@Gio.AsyncResult] documentation to know how to use this function.
If the operation is cancelled, the @callback will only be called if
@cancellable was not %NULL. The method takes
ownership of @cancellable, so you can unref it after calling this function.
The asynchronous version of [method@SearchContext.forward].
See the [iface@Gio.AsyncResult] documentation to know how to use this function.
If the operation is cancelled, the @callback will only be called if @cancellable was not %NULL. The method takes ownership of @cancellable, so you can unref it after calling this function.