code: func (t *TextBar) SetCenter(s string, style tcell.Style) {
  	t.initialize()
  	if style == tcell.StyleDefault {
  		style = t.style
  	}
  	t.center.SetText(s)
  	t.center.SetStyle(style)
  }
docs: // SetCenter sets the center text for the textbar.  The text is
  // always center aligned.