def METHOD_NAME(self):
    if self.node is not None:
        n = self.node
    else:
        n = Env.nodename
    try:
        nodes = self.cloud.driver.list_nodes()
    except Exception as e:
        raise ex.Error(str(e))
    for node in nodes:
        if node.name == n:
            return node
    raise ex.Error()