def add_wikilink(self, title, href, **attrs):
        """
        Add a Wiki link to the project and returns a :class:`WikiLink` object.

        :param title: title of the :class:`WikiLink`
        :param href: href of the :class:`WikiLink`
        :param attrs: optional attributes for :class:`WikiLink`
        """
        return WikiLinks(self.requester).create(self.id, title, href, **attrs)