public function isGroupClass( core_kernel_classes_Class $clazz)
    {
        return $clazz->equals($this->getRootClass()) || $clazz->isSubClassOf($this->getRootClass());
    }
public function isGroupClass( core_kernel_classes_Class $clazz)
    {
        return $clazz->equals($this->getRootClass()) || $clazz->isSubClassOf($this->getRootClass());
    }
public function isGroupClass ( core_kernel_classes_Class $ clazz ) { return $ clazz -> equals ( $ this -> getRootClass ( ) ) || $ clazz -> isSubClassOf ( $ this -> getRootClass ( ) ) ; }
Check if the Class in parameter is a subclass of the Group Class

@access public
@author Joel Bout, <joel.bout@tudor.lu>
@param  Class clazz
@return boolean
Check if the Class in parameter is a subclass of the Group Class