Google Apps Script API
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    A clickable menu item that is added to the card header menu.

    var action = CardService.newAction();
    // Finish building the action...
    
    var cardAction = CardService.newCardAction()
        .setText("Card action")
        .setOnClickAction(action);
    
    interface CardAction {
        setAuthorizationAction(action: AuthorizationAction): CardAction;
        setComposeAction(
            action: GoogleAppsScript.Card_Service.Action,
            composedEmailType: ComposedEmailType,
        ): CardAction;
        setOnClickAction(action: GoogleAppsScript.Card_Service.Action): CardAction;
        setOnClickOpenLinkAction(
            action: GoogleAppsScript.Card_Service.Action,
        ): CardAction;
        setOpenLink(openLink: OpenLink): CardAction;
        setText(text: string): CardAction;
    }
    Index

    Methods