css/css.go
func AddRule(styleSheetID StyleSheetID, ruleText string, location *SourceRange) *AddRuleParams {
	return &AddRuleParams{
		StyleSheetID: styleSheetID,
		RuleText:     ruleText,
		Location:     location,
	}
}
func AddRule(styleSheetID StyleSheetID, ruleText string, location *SourceRange) *AddRuleParams {
	return &AddRuleParams{
		StyleSheetID: styleSheetID,
		RuleText:     ruleText,
		Location:     location,
	}
}
// AddRule inserts a new rule with the given ruleText in a stylesheet with
// given styleSheetId, at the position specified by location.
//
// See: https://chromedevtools.github.io/devtools-protocol/tot/CSS#method-addRule
//
// parameters:
//   styleSheetID - The css style sheet identifier where a new rule should be inserted.
//   ruleText - The text of a new rule.
//   location - Text position of a new rule in the target style sheet.