code: func (self *Grid) Set(entries ...interface{}) {
  	entry := GridItem{
  		Type:   row,
  		Entry:  entries,
  		IsLeaf: false,
  		ratio:  1.0,
  	}
  	self.setHelper(entry, 1.0, 1.0)
  }
docs: // Set is used to add Columns and Rows to the grid.
  // It recursively searches the GridItems, adding leaves to the grid and calculating the dimensions of the leaves.