How to use the matrix-react-sdk/lib/MatrixClientPeg.getHomeServerName function in matrix-react-sdk

getMoreRooms: function() {
        if (!MatrixClientPeg.get()) return Promise.resolve();

        const my_filter_string = this.state.filterString;
        const my_server = this.state.roomServer;
        // remember the next batch token when we sent the request
        // too. If it's changed, appending to the list will corrupt it.
        const my_next_batch = this.nextBatch;
        const opts = {limit: 20};
        if (my_server != MatrixClientPeg.getHomeServerName()) {
            opts.server = my_server;
        }
        if (this.state.instanceId) {
            opts.third_party_instance_id = this.state.instanceId;
        } else if (this.state.includeAll) {
            opts.include_all_networks = true;
        }
        if (this.nextBatch) opts.since = this.nextBatch;
        if (my_filter_string) opts.filter = { generic_search_term: my_filter_string } ;
        return MatrixClientPeg.get().publicRooms(opts).then((data) => {
            if (
                my_filter_string != this.state.filterString ||
                my_server != this.state.roomServer ||
                my_next_batch != this.nextBatch)
            {
                // if the filter or server has changed since this request was sent,

_getMenuOptions() {
        const options = [];

        let servers = [];
        if (this.props.config.servers) {
            servers = servers.concat(this.props.config.servers);
        }

        if (servers.indexOf(MatrixClientPeg.getHomeServerName()) == -1) {
            servers.unshift(MatrixClientPeg.getHomeServerName());
        }

        for (const server of servers) {
            options.push(this._makeMenuOption(server, null));
            if (this.props.config.serverConfig && this.props.config.serverConfig[server] && this.props.config.serverConfig[server].networks) {
                for (const network of this.props.config.serverConfig[server].networks) {
                    options.push(this._makeMenuOption(server, network));
                }
            }
        }

        return options;
    }

_getMenuOptions() {
        const options = [];

        let servers = [];
        if (this.props.config.servers) {
            servers = servers.concat(this.props.config.servers);
        }

        if (servers.indexOf(MatrixClientPeg.getHomeServerName()) == -1) {
            servers.unshift(MatrixClientPeg.getHomeServerName());
        }

        for (const server of servers) {
            options.push(this._makeMenuOption(server, null));
            if (this.props.config.serverConfig && this.props.config.serverConfig[server] && this.props.config.serverConfig[server].networks) {
                for (const network of this.props.config.serverConfig[server].networks) {
                    options.push(this._makeMenuOption(server, network));
                }
            }
        }

        return options;
    }

super(props);

        this.dropdownRootElement = null;
        this.ignoreEvent = null;

        this.onInputClick = this.onInputClick.bind(this);
        this.onRootClick = this.onRootClick.bind(this);
        this.onDocumentClick = this.onDocumentClick.bind(this);
        this.onMenuOptionClick = this.onMenuOptionClick.bind(this);
        this.onInputKeyUp = this.onInputKeyUp.bind(this);
        this.collectRoot = this.collectRoot.bind(this);
        this.collectInputTextBox = this.collectInputTextBox.bind(this);

        this.inputTextBox = null;

        const server = MatrixClientPeg.getHomeServerName();
        let defaultNetwork = null;
        if (
            this.props.config.serverConfig &&
            this.props.config.serverConfig[server] &&
            this.props.config.serverConfig[server].networks &&
            this.props.config.serverConfig[server].networks.indexOf('_matrix') > -1
        ) {
            defaultNetwork = '_matrix';
        }

        this.state = {
            expanded: false,
            selectedServer: server,
            selectedNetwork: defaultNetwork,
        };
    }