code: @Override
      public <C extends PersistentCollection<? super T>> ListT<W,C> grouped(final int size, final Supplier<C> supplier) {
  
          return (ListT<W,C>) FoldableTransformerSeq.super.grouped(size, supplier);
      }
docs: /* (non-Javadoc)
  @see cyclops2.monads.transformers.values.ListT#grouped(int, java.util.function.Supplier)