code: @Nonnull
    public static <ELEMENTTYPE> Enumeration <ELEMENTTYPE> getEnumeration (@Nullable final Iterable <ELEMENTTYPE> aCont)
    {
      return CollectionHelper.isEmpty (aCont) ? new EmptyEnumeration <> () : getEnumeration (aCont.iterator ());
    }
docs: Get an {@link Enumeration} object based on a {@link Collection} object.
  
  @param <ELEMENTTYPE>
  the type of the elements in the container
  @param aCont
  The container to enumerate.
  @return an Enumeration object