code: public BoxRequestsBookmark.UpdateSharedBookmark getCreateSharedLinkRequest(String id) {
          BoxRequestsBookmark.UpdateSharedBookmark request = new BoxRequestsBookmark.UpdateSharedBookmark(id, getBookmarkInfoUrl(id), mSession)
                  .setAccess(null);
          return request;
      }
docs: Gets a request that creates a shared link for a bookmark
  
  @param id        id of bookmark to create shared link for
  @return      request to create a shared link for a bookmark