Class Divider

function buildCard() {
    let cardSection1TextParagraph1 = CardService.newTextParagraph()
        .setText('Hello world!');

    let cardSection1Divider1 = CardService.newDivider();

    let cardSection1TextParagraph2 = CardService.newTextParagraph()
        .setText('Hello world!');

    let cardSection1 = CardService.newCardSection()
        .addWidget(cardSection1TextParagraph1)
        .addWidget(cardSection1Divider1)
        .addWidget(cardSection1TextParagraph2);

    let card = CardService.newCardBuilder()
        .addSection(cardSection1)
        .build();

   return card;
}