code: def add_issue(self, subject, priority, status,
                    issue_type, severity, **attrs):
          
          return Issues(self.requester).create(
              self.id, subject, priority, status,
              issue_type, severity, **attrs
          )
docs: Adds a Issue and returns a :class:`Issue` resource.
  
          :param subject: subject of the :class:`Issue`
          :param priority: priority of the :class:`Issue`
          :param priority: status of the :class:`Issue`
          :param issue_type: type of the :class:`Issue`
          :param severity: severity of the :class:`Issue`
          :param attrs: other :class:`Issue` attributes