Can I mount a POST route?

The following code works:

`$router->post('/api/social/contact', 'SocialController@contact');`

But this code doesn't:

```
$router->mount('/api', function() use($router) {
$router->mount('/social', function() use($router) {
$router->post('/contact', 'SocialController@contact');
});
});
```
Note that there is no method specified in the `mount` statement.

Am I missing something?

Start by reproducing the nested $router->mount('/api') and $router->mount('/social') calls with the inner $router->post('/contact', ...) route. Inspect how mount and post handle method and path prefixes, then verify that the mounted POST route dispatches to SocialController@contact without requiring a method on mount.

Written by the indexing model from the issue text.