code: func (c *Page) AddScriptToEvaluateOnNewDocument(source string, worldName string) (string, error) {
  	var v PageAddScriptToEvaluateOnNewDocumentParams
  	v.Source = source
  	v.WorldName = worldName
  	return c.AddScriptToEvaluateOnNewDocumentWithParams(&v)
  }
docs: // AddScriptToEvaluateOnNewDocument - Evaluates given script in every frame upon creation (before loading frame's scripts).
  // source -
  // worldName - If specified, creates an isolated world with the given name and evaluates given script in it. This world name will be used as the ExecutionContextDescription::name when the corresponding event is emitted.
  // Returns -  identifier - Identifier of the added script.