code: func (c *CSS) SetMediaText(styleSheetId string, theRange *CSSSourceRange, text string) (*CSSCSSMedia, error) {
  	var v CSSSetMediaTextParams
  	v.StyleSheetId = styleSheetId
  	v.TheRange = theRange
  	v.Text = text
  	return c.SetMediaTextWithParams(&v)
  }
docs: // SetMediaText - Modifies the rule selector.
  // styleSheetId -
  // range -
  // text -
  // Returns -  media - The resulting CSS media rule after modification.