Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & AndroId platforms....listContacts(String id) — 从指定文件夹检索联系人集合。 fetchContact(String id) — 按 ID 检索联系人。...