code: @Nonnull
    public PLTable addRow (@Nonnull final Iterable <? extends PLTableCell> aCells, @Nonnull final HeightSpec aHeight)
    {
      addAndReturnRow (aCells, aHeight);
      return this;
    }
docs: Add a new table row. All contained elements are added with the specified
  width in the constructor. <code>null</code> elements are represented as
  empty cells.
  
  @param aCells
  The cells to add. May not be <code>null</code>.
  @param aHeight
  Row height to be used.
  @return this