Function gtk_source_sys::gtk_source_search_context_backward_finish

pub unsafe extern "C" fn gtk_source_search_context_backward_finish(
    search: *mut GtkSourceSearchContext, 
    result: *mut GAsyncResult, 
    match_start: *mut GtkTextIter, 
    match_end: *mut GtkTextIter, 
    error: *mut *mut GError
) -> gboolean