Review Default Wallet Strategy's installApplications method

In the DefaultStrategy.installApplications method there is a 'loose' (split from the method's return call) code exert:

self.walletService.getSSAppsFromInstallationURL((err, apps) => {
                let externalAppsList = Object.keys(apps);
                if (externalAppsList.length > 0) {
                    externalAppsList.forEach(appName => {
                        appsToBeInstalled[appName] = {
                            hasTemplate: false,
                            newInstance: false,
                            seed: apps[appName]
                        };
                    });
                    let landingApp = {name: externalAppsList[0]};
                    wallet.writeFile(`${self.config.appsFolderName}/.landingApp`, JSON.stringify(landingApp), () => {
                        console.log(`Written landingApp [${landingApp.name}]. `)
                    });
                }
            });

compare this against the Original Trust Loader implementation to verify all is ok (and if this works or not originally)