How to use the wilson/application.getApplicationInstance function in wilson

exports.wrap = function(view, appname) {
    var view_split = view.split('.'),
        target = require(view_split[0]),
        appInstance = application.getApplicationInstance(appname);
    for(var i = 1, len = view_split.length; i < len; ++i) {
        target = target[view_split[i]];
    }
    return function() {
        return target.apply(appInstance, Array.prototype.slice.call(arguments));
    };
};

Object.keys(middleware).forEach(function(name) {
            output_middleware[name] = createWrappedMethod(instance, middleware[name]); 
        });

        output_middleware.toString = function() {
            return "";
        };
        return output_middleware;
    }; 

    for(var i = 0, len = middleware_strings.length; i < len; ++i) {
        var split = middleware_strings[i].split(':'),
            app = split[0],
            rest = split.slice(1).join(':'),
            appInstance = application.getApplicationInstance(app);
        middleware.push(createWrappedMiddleware(appInstance, appInstance.app.middleware[rest], rest));
    }

    return function(request, response) {
        var wilsonRequest = new http.HttpRequest(request, response, middleware);
        wilsonRequest.attemptContinue();
    };
};

exports.runcommand = function() {
    var sys = require('sys'),
        conf = require('wilson/conf'),
        core = require('wilson/core/app'),
        application = require('wilson/application'),
        app_and_command = process.argv[2].split(':'),
        app = app_and_command[0],
        command = app_and_command[1],
        appInstance;

    try {
        application.loadApps(conf.settings.APP_OVERRIDES);
        appInstance = application.getApplicationInstance(app);
    } catch(err) {
        conf.setSettings({
            INSTALLED_APPS:{
                core:application.use('wilson/core')
            },
            TEMPLATE_LOADERS:[
                'wilson/template/loaders.application',
                'wilson/template/loaders.filesystem',
            ],
        });
        application.loadApps(conf.settings.APP_OVERRIDES);
        appInstance = application.getApplicationInstance('core');
    }

    if(appInstance) {
        var appCommand = appInstance.app.commands[command];

try {
        application.loadApps(conf.settings.APP_OVERRIDES);
        appInstance = application.getApplicationInstance(app);
    } catch(err) {
        conf.setSettings({
            INSTALLED_APPS:{
                core:application.use('wilson/core')
            },
            TEMPLATE_LOADERS:[
                'wilson/template/loaders.application',
                'wilson/template/loaders.filesystem',
            ],
        });
        application.loadApps(conf.settings.APP_OVERRIDES);
        appInstance = application.getApplicationInstance('core');
    }

    if(appInstance) {
        var appCommand = appInstance.app.commands[command];
        if(appCommand) {
            appCommand.apply(appInstance, process.argv.slice(3));
        } else {
            sys.puts('Could not find the command '+app_and_command);
            if(app === appInstance.name) {
                sys.puts('Available commands within '+app);
                for(var command_name in appInstance.app.commands) {
                    sys.puts('\t'+[app, command_name].join(':'));
                }
            } else {
                sys.puts('All apps and commands:');
                var appInstances = application.getApplicationInstances();

exports.app = function(regex, app_name, instance) {
    var app_instance = instance || application.getApplicationInstance(app_name),
        routes = app_instance.app.urls.routes,
        routes_out = [];

    for(var i = 0, len = routes.length; i < len; ++i) {
        routes_out.push(new escaperoute.Route(
            routes[i].re.source,
            routes[i].target,
            [app_instance.name,routes[i].name].join(':')
        ));
    }

    app_instance.urls = new escaperoute.Router(
        app_instance.app.urls.base_path,
        routes_out,
        app_instance
    );