public static function applyFilter($method, $closure = null) {
		$instance = static::_object();
		$methods = (array) $method;

		foreach ($methods as $method) {
			if (!isset($instance->_instanceFilters[$method])) {
				$instance->_instanceFilters[$method] = array();
			}
			$instance->_instanceFilters[$method][] = $closure;
		}
	}