$clientEventMap protected property
Event names mapped to what should be specified in .on(). If empty, it is assumed that event passed to clientEvents is prefixed with widget name. Event names mapped to what should be specified in .on(). If empty, it is assumed that event passed to clientEvents is prefixed with widget name.
protected array $clientEventMap = ['activate' => 'dropactivate', 'create' => 'dropcreate', 'deactivate' => 'dropdeactivate', 'drop' => 'drop', 'out' => 'd