See the #GAsyncResult documentation to know how to use this function.
If the operation is cancelled, the callback will only be called if
cancellable was not null. gtksource.search_context.SearchContext.backwardAsync takes
ownership of cancellable, so you can unref it after calling this function.
The asynchronous version of gtksource.search_context.SearchContext.backward.
See the documentation of gtksource.search_context.SearchContext.backward for more details.
See the #GAsyncResult documentation to know how to use this function.
If the operation is cancelled, the callback will only be called if cancellable was not null. gtksource.search_context.SearchContext.backwardAsync takes ownership of cancellable, so you can unref it after calling this function.