ZF\Console\Application::showMessage PHP Method

showMessage() public method

If the message is a string and not callable, uses the composed console instance to render it. If the message is a callable, calls it with the composed console instance as an argument.
public showMessage ( string | callable $messageOrCallable )
$messageOrCallable string | callable
    public function showMessage($messageOrCallable)
    {
        if (is_string($messageOrCallable) && !is_callable($messageOrCallable)) {
            $this->console->writeLine($messageOrCallable);
            return;
        }
        if (is_callable($messageOrCallable)) {
            call_user_func($messageOrCallable, $this->console);
        }
    }