code: func (ta *TextArea) SetLines(lines []string) {
  	ta.Init()
  	m := ta.model
  	m.width = 0
  	m.height = len(lines)
  	m.lines = append([]string{}, lines...)
  	for _, l := range lines {
  		if len(l) > m.width {
  			m.width = len(l)
  		}
  	}
  	ta.CellView.SetModel(m)
  }
docs: // SetLines sets the content text to display.