language file inside a folder

Hey people!

I can use:

PHP Code:

lang('Errors.errorEmailMissing'); 


But, image that Errors.php is inside "app/Language/en/mysite/Errors.php". Now, how can I call the language?

PHP Code:

lang('mysite.Errors.errorEmailMissing'); //doesn't work, for example
lang('mysite/Errors.errorEmailMissing'); //too 


I need this because I want to use the same viewers files paths.