RegularExpression::getRef PHP Method

    function getRef(Project $p)
    {
        if (!$this->checked) {
            $stk = array();
            array_push($stk, $this);
            $this->dieOnCircularReference($stk, $p);
        }
        $o = $this->ref->getReferencedObject($p);
        if (!$o instanceof RegularExpression) {
            throw new BuildException($this->ref->getRefId() . " doesn't denote a RegularExpression");
        } else {
            return $o;
        }
    }