code: func (c *CSS) CollectClassNames(styleSheetId string) ([]string, error) {
  	var v CSSCollectClassNamesParams
  	v.StyleSheetId = styleSheetId
  	return c.CollectClassNamesWithParams(&v)
  }
docs: // CollectClassNames - Returns all class names from specified stylesheet.
  // styleSheetId -
  // Returns -  classNames - Class name list.