can't use key from element defined in inner grouping from list using outer grouping

If I have something like this:

grouping inner {
leaf myKey;
leaf fieldAbc;
}

grouping outer {
uses inner;
}

list myList {
key "myKey";
uses outer;
}

It fails with error on key "myKey". Problem encountered in: https://git.opendaylight.org/gerrit/#/c/24078/5/hwvtepsouthbound/hwvtepsouthbound-api/src/main/yang/hwvtep.yang Check code form Line 56-90 and then 137 to 151.

For now workaround would be to use both the groupings directly in code 137 to 151. Refer fix at: https://gist.github.com/vishnoianil/d5fd0a8967791ff2aa0c