PdfListItem API in JavaScript PDF API control

// Load an existing PDF document
let document: PdfDocument = new PdfDocument(data);
// Access the first page
let page: PdfPage = document.getPage(0);
// Create an instance of list item collection by passing the string array
let items: PdfListItemCollection = new PdfListItemCollection(['Excel', 'Power', 'Point', 'Word']);
// Create a new list item and add into the collection
items.add(new PdfListItem('PDF'));
// Create a new PDF ordered list
let list: PdfOrderedList = new PdfOrderedList(items);
// Draw the list items
list.draw(page, 0, 20);
// Save the document
document.save('output.pdf');
// Destroy the document
document.destroy();