Add a Wiki page to the project and returns a :class:`WikiPage` object.

        :param name: name of the :class:`WikiPage`
        :param attrs: optional attributes for :class:`WikiPage`

def add_wikipage(self, slug, content, **attrs):
        """
        Add a Wiki page to the project and returns a :class:`WikiPage` object.

        :param name: name of the :class:`WikiPage`
        :param attrs: optional attributes for :class:`WikiPage`
        """
        return WikiPages(self.requester).create(
            self.id, slug, content, **attrs
        )