Maintainer: ‘Xiuwen Wang <wangxw36@mail2.sysu.edu.cn>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Xiuwen",
                    family = "Wang",
                    role = c("aut", "cre"),
                    email = "wangxw36@mail2.sysu.edu.cn")
as necessary.
Maintainer: ‘Xiuwen Wang <wangxw36@mail2.sysu.edu.cn>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Xiuwen",
                    family = "Wang",
                    role = c("aut", "cre"),
                    email = "wangxw36@mail2.sysu.edu.cn")
as necessary.