Add a Issue type to the project and returns a
        :class:`IssueType` object.

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

def add_issue_type(self, name, **attrs):
        """
        Add a Issue type to the project and returns a
        :class:`IssueType` object.

        :param name: name of the :class:`IssueType`
        :param attrs: optional attributes for :class:`IssueType`
        """
        return IssueTypes(self.requester).create(self.id, name, **attrs)