public function getClassByName($className)
    {
        $classMap = $this->getClassMap($this->splitClassName($className)) . "[\"__class\"]";
        $return = null;

        eval(
            "if (isset(\$this->indexedClasses$classMap)) {"
            . " \$return = \$this->indexedClasses$classMap;"
            . "}"
        );

        return $return;
    }