docs: def _get_application_module(self, controller, application):
          """Return the module for an application. If it's a entry-point
          registered application name, return the module name from the entry
          points data. If not, the passed in application name is returned.
  
          :param str controller: The controller type
          :param str application: The application name or module
          :rtype: str
  
          """
          for pkg in self._get_applications(controller):
              if pkg.name == application:
                  return pkg.module_name
          return application