Able to overwrite overload method A*

Under Sandcastle, it was possible to insert documentation from an XML file about an overloaded method which applied to all overloads of that method:

```

blah blah blah .....
```

Under docfx, this does not currently seem to be supported.

Whilst the 'generic' uid of something like
```
mynamespace.myclass.myoverloadedmethod*
```
appears throughout, it does not appear that you can use it to add content with a file override. It's only appearance in the template appears to be used as an anchor point to get to the top of the list of overloads.

I previously 'fudged' its use by manually adding a child item to the yml file which I then defined and so could use a file override to insert content. This of course will get broken each time the file is re-generated, so is not a viable solution.

Unless I am totally missing something in the use of file overrides?

I don't know if this needs a code change to add an item to the yml file or if it is just a simple template change (I'm guessing the former).