Description Zoltan Ujhelyi 2018-07-06 07:41:44 EDT

We have received reports that having Java 7 as a requirement for the project results in confusing error messages in the generated code, like `Type mismatch: cannot convert from Set<Object> to Collection<P.Match>` in the following place

>    public Collection<P.Match> getAllMatches(final Type pT, final Type pRef) {
>      return rawStreamAllMatches(new Object[]{pT, pRef}).collect(Collectors.toSet());
>    }

We should provide some better feedback and possibly update the migrator to ensure the Java 8 dependency as well.