playframework/Play20 — comment on commit f35fd305d98038ab0fe3f8076368ee7f8d90015b
File:  line 0
By recalcitrant:

The * function returns a ResultSetParser but the ~ function expects a RowParser.

So how can one combine an object with a Sequence of other objects as before the refactoring?

This worked before : User.single ~ ( Permission.single * )
This does not anymore : User.single ~ ( Permission.single * )