public function filterNamespace( $namespaceName) {
        $FilteredClasses = [];
        foreach( $this->loadedClasses as $loadedClass){
            if( 0 == substr_compare( $loadedClass, $namespaceName, 0, strlen( $namespaceName))){
                $FilteredClasses[] = $loadedClass;
            }
        }
        $this->loadedClasses = $FilteredClasses;
    }