@Override
  public int insertGridCells(final RadContainer grid, final int cellIndex, final boolean isRow, final boolean isBefore, final boolean grow) {
    FormSpec formSpec;
    if (isRow) {
      formSpec = grow ? new RowSpec(ENCODED_FORMSPEC_GROW) : new RowSpec(DEFAULT_NOGROW_SIZE);
    }
    else {
      formSpec = grow ? new ColumnSpec(ENCODED_FORMSPEC_GROW) : new ColumnSpec(DEFAULT_NOGROW_SIZE);
    }
    insertGridCells(grid, cellIndex, isRow, isBefore, formSpec);
    return getGridCellCount(grid, isRow) == 1 ? 1 : 2;
  }
@Override
  public int insertGridCells(final RadContainer grid, final int cellIndex, final boolean isRow, final boolean isBefore, final boolean grow)