class Type abstract
{
    static clearscope bool ClassExists(string className)
    {
        Class type = className;

        return type != null;
    }

    static clearscope bool IsSubclass(string className, string parentName)
    {
        Class parent = parentName;
        Class type = className;

        return (parent && type) ? type is parent : false;
    }

    static clearscope bool ObjectIs(Object o, string className)
    {
        return ClassExists(className) ? o is className : false;
    }
}