/**
 * Write a string to standard output.
 *
 * @param   string   $text  The text to display.
 * @param   boolean  $nl    True (default) to append a new line at the end of the output string.
 *
 * @return  $this
 *
 * @since   4.0.0
 */
public function out($text = '', $nl = true)
{
    $this->getOutput()->out($text, $nl);
    return $this;
}