createInstall method Null safety
Create a new instance of Install class.
This method executes locally.
installId is the installation identifier created by createInstallId.
applicationId is the application identifier as defined in premiumpay.site.
features is the list of all the features existing in the app installation, each feature is represented by its feature_code as defined in premiumpay.site.
Implementation
Install createInstall(String installId, String applicationId, List<String> features);