Method apply

/**
 * Writes a save button for a given option.
 * Apply operation leads to a save action only (does not leave edit mode).
 *
 * @param   string  $task  The task name of this button.
 * @param   string  $text  The text of this button.
 *
 * @return  StandardButton
 *
 * @since   4.0.0
 */
public function apply(string $task, string $text = 'JTOOLBAR_APPLY') : StandardButton
{
    return $this->standardButton('apply', $text)->task($task)->formValidation(true);
}