Stops any ongoing loading operation in @web_view.
This method does nothing if no content is being loaded.
If there is a loading operation in progress, it will be cancelled and
#WebKitWebView::load-failed signal will be emitted with
%WEBKIT_NETWORK_ERROR_CANCELLED error.
Stops any ongoing loading operation in @web_view. This method does nothing if no content is being loaded. If there is a loading operation in progress, it will be cancelled and #WebKitWebView::load-failed signal will be emitted with %WEBKIT_NETWORK_ERROR_CANCELLED error.