/**
* Add a raw having clause to the query.
*
* @param string $sql
* @param array $bindings
* @param string $boolean
* @return $this
* @static
*/
public static function havingRaw($sql, $bindings = array(), $boolean = 'and')
{
return \Illuminate\Database\Query\Builder::havingRaw($sql, $bindings, $boolean);
}