message: added deprecated test
diff: @@ -7,6 +7,9 @@ import pptxgen from "pptxgenjs";
  export function testMainMethods() {
  let pptx = new pptxgen();
  + // LEGACY-TEST: @deprecated in v3.3.0
  + let slide0 = pptx.addSlide('masterName');
  +
  pptx.addSection({ title: "TypeScript" });
  // PPTX Method 1:
  