src/Provider/FacebookUser.php
private function getField($key)
    {
        return isset($this->data[$key]) ? $this->data[$key] : null;
    }
private function getField($key)
    {
        return isset($this->data[$key]) ? $this->data[$key] : null;
    }
private function getField ( $ key ) { return isset ( $ this -> data [ $ key ] ) ? $ this -> data [ $ key ] : null ; }
Returns a field from the Graph node data.

@param string $key

@return mixed|null
Returns a field from the Graph node data .