import com.spotify.docker.client.messages.swarm.Node; //导入依赖的package包/类
public DockerNode(Node node) {
    id = node.id();
    hostname = node.description().hostname();
    availability = capitalize(node.spec().availability());
    state = capitalize(node.status().state());
    nodeIP = node.status().addr();
    role = capitalize(node.spec().role());

    final ManagerStatus managerStatus = node.managerStatus();
    this.managerStatus = getManagerStatus(managerStatus);

    engineVersion = node.description().engine().engineVersion();
    architecture = node.description().platform().architecture();
    os = node.description().platform().os();

    memory = Util.readableSize(node.description().resources().memoryBytes());
    cpus = node.description().resources().nanoCpus() / 1000000000;
}
 

import com.spotify.docker.client.messages.swarm.Node; //导入依赖的package包/类
@Override
public List<Node> listNodes() {
    throw new IllegalStateException(DISCONNECTED); 
}