code: @NotNull
      public static <T> ComparatorCompat<T> nullsLast(@Nullable Comparator<? super T> comparator) {
          return nullsComparator(false, comparator);
      }
docs: Returns a comparator that considers {@code null} to be greater than non-null.
  If the specified comparator is {@code null}, then the returned
  comparator considers all non-null values to be equal.
  
  @param <T> the type of the objects compared by the comparator
  @param comparator  a comparator for comparing non-null values
  @return a comparator