IMP_Ftree::offsetGet PHP Method

    public function offsetGet($offset)
    {
        if ($offset instanceof IMP_Ftree_Element) {
            return $offset;
        }
        /* Optimization: Only normalize in the rare case it is not found on
         * the first attempt. */
        $offset = strval($offset);
        if (isset($this->_elts[$offset])) {
            return new IMP_Ftree_Element($offset, $this);
        }
        $offset = $this->_normalize($offset);
        return isset($this->_elts[$offset]) ? new IMP_Ftree_Element($offset, $this) : null;
    }