code: func (ta *TextArea) Init() {
  	ta.once.Do(func() {
  		lm := &linesModel{lines: []string{}, width: 0}
  		ta.model = lm
  		ta.CellView.Init()
  		ta.CellView.SetModel(lm)
  	})
  }
docs: // Init initializes the TextArea.