'Cancel a server package.
:param      node: Node which should be used
:type       node: :class:`Node`
:rtype: ``str``'

def ex_cancel_package(self, node):

    params = {'mbpkgid': node.id}
    result = self.connection.request((API_ROOT + '/cloud/cancel/'), data=json.dumps(params), method='POST').object
    return result
