src/Collection/IdentityWrapper.php
public function indexOf($element)
    {
        return $this->collection->indexOf($element) === false ? false : $this->getKey($element);
    }
public function indexOf($element)
    {
        return $this->collection->indexOf($element) === false ? false : $this->getKey($element);
    }
public function indexOf ( $ element ) { return $ this -> collection -> indexOf ( $ element ) === false ? false : $ this -> getKey ( $ element ) ; }
{@inheritDoc}
{