lib/components/types/Relationship.php
public static function has(Item $parent, Item $child)
    {
        $key = md5($parent->systemId . "." . $child->systemId);

        return isset(self::$_relationships[$key]);
    }
public static function has(Item $parent, Item $child)
    {
        $key = md5($parent->systemId . "." . $child->systemId);

        return isset(self::$_relationships[$key]);
    }
[[@doctodo method_description:has]].

@param cascade\components\types\Item $parent [[@doctodo param_description:parent]]
@param cascade\components\types\Item $child  [[@doctodo param_description:child]]

@return [[@doctodo return_type:has]] [[@doctodo return_description:has]]