How to assess whether Enum in EnumSet implements an interface

I need to write a function that accepts a class object and checks whether the argument is the EnumSet of enums implementing a specific interface.

Below is the function I currently have, but it only checks whether the class is an EnumSet, but I'm not able to assess it's Enum.

I have an interface

public interface EnumWithOrdinalValue {
    long getOrdinalValue();
}

Some enums in code implement it, some don't and I need to filter out the later.

public boolean isMatching(@Nonnull Class<?> aClass) {
        boolean retval = false;
        retval |= EnumSet.class.isAssignableFrom(aClass);
        return retval;
    }