protected function loadOriginalClassAndSetAliases($originalClassName)
    {
        if ($this->classOrInterfaceExists($originalClassName) || $this->loadClass($originalClassName)) {
            foreach ($this->aliasMap['classNameToAliasMapping'][$originalClassName] as $aliasClassName) {
                if (!$this->classOrInterfaceExists($aliasClassName)) {
                    class_alias($originalClassName, $aliasClassName);
                }
            }

            return true;
        }

        return null;
    }