          text: "",
        } },
      ]
    });

    // 2. Add a Slide
    let slide = pres.addSlide({ masterName: "TitleSlide" });
    slide.addText("Amazing Grace", { placeholder: "title" });

    slide = pres.addSlide({ masterName: "SlideWithSpoiler" });

    // Add text, charts, etc. to any placeholder using its `name`
    slide.addText("Amazing Grace, How sweet the sound!\nThat saved a wretch like me.\nI once was lost, but now was found.\nWas blind, but now I see.", { placeholder: "maincontent" });
  