code: func (g *Grid) SetRows(rows ...int) *Grid {
  	g.rows = rows
  	return g
  }
docs: // SetRows defines how the rows of the grid are distributed. These values behave
  // the same as the column values provided with SetColumns(), see there for a
  // definition and examples.
  //
  // The provided values correspond to row heights, the first value defining
  // the height of the topmost row.