xmlrpc function in another file I would like to put all my xmlrpc functions in a separate inc file and the problem is, how would we tell drupal it is in another file.  Right now, my hook_xmlrpc in my module file looks like this:

function mymodule_xmlrpc() {

  $methods['mymodule.get_myfunction'] = 'xmls_mymodule_get_myfunction';
  return $methods;
}


xmls_mymodule_get_myfunction resides in mymodule.xml-rpc.inc file.  How do we let drupal know that in this hook?
Unfortunately, I don't believe you can.

Many core hooks, such as hook_menu, let's you define a file and a file path which Drupal can use to find the actual callbacks for the menu.

However, I don't believe this functionality is supported by hook_xmlrpc.

Considering also that the module is likely to leave core soon, it's unlikely that there will be any large improvements to it.