How to use the rsp-client.ServerState.PUBLISH_STATE_UNKNOWN function in rsp-client

};
    
    public static readonly okStartServerResponse: Protocol.StartServerResponse = {
        details: ProtocolStubs.cmdDetails,
        status: ProtocolStubs.okStatus
    };

    public static readonly errorStartServerResponse: Protocol.StartServerResponse = {
        details: ProtocolStubs.cmdDetails,
        status: ProtocolStubs.errorStatus
    };

    public static readonly unknownServerState: ServerStateNode =  {
        server: ProtocolStubs.serverHandle,
        deployableStates: [],
        publishState: ServerState.PUBLISH_STATE_UNKNOWN,
        runMode: ServerState.RUN_MODE_RUN,
        state: ServerState.UNKNOWN,
        rsp: 'id'
    };

    public static readonly startedServerStateProtocol: Protocol.ServerState = {
        deployableStates: [],
        publishState: ServerState.PUBLISH_STATE_UNKNOWN,
        server: ProtocolStubs.serverHandle,
        runMode: ServerState.RUN_MODE_RUN,
        state: ServerState.STARTED
    };

    public static readonly deployableReference: Protocol.DeployableReference = {
        label: 'fake',
        path: 'fakepath'

public static readonly startedServerStateProtocol: Protocol.ServerState = {
        deployableStates: [],
        publishState: ServerState.PUBLISH_STATE_UNKNOWN,
        server: ProtocolStubs.serverHandle,
        runMode: ServerState.RUN_MODE_RUN,
        state: ServerState.STARTED
    };

    public static readonly deployableReference: Protocol.DeployableReference = {
        label: 'fake',
        path: 'fakepath'
    };

    public static readonly deployableStateNode: DeployableStateNode = {
        rsp: 'id',
        publishState: ServerState.PUBLISH_STATE_UNKNOWN,
        server: ProtocolStubs.serverHandle,
        state: ServerState.STARTED,
        reference: ProtocolStubs.deployableReference
    };

    public static readonly startedServerState: ServerStateNode = {
        deployableStates: [ProtocolStubs.deployableStateNode],
        publishState: ServerState.PUBLISH_STATE_UNKNOWN,
        server: ProtocolStubs.serverHandle,
        runMode: ServerState.RUN_MODE_RUN,
        state: ServerState.STARTED,
        rsp: 'id'
    };

    public static readonly stoppedServerState: ServerStateNode = {
        deployableStates: [],

const serverFilter = server => server.publishState === ServerState.PUBLISH_STATE_NONE ||
                                           server.publishState === ServerState.PUBLISH_STATE_INCREMENTAL ||
                                           server.publishState === ServerState.PUBLISH_STATE_UNKNOWN;
            const serverId = await this.selectServer(rsp.id, 'Select server to remove deployment from', serverFilter);