protected function getInlineArgument()
{
$a = $this->renderChildren();
if (null === $a && true === isset($this->arguments['a'])) {
$a = $this->arguments['a'];
}
if (null === $a && true === (bool) $this->arguments['fail']) {
throw new Exception('Required argument "a" was not supplied', 1237823699);
}
return $a;
}