Initialization
XpressPlug needs to be initialized so that it can be invoked correctly.
To initialize, make sure that the constants and modules variables were properly created on the previous step. To do this, it is recommended to include the following method in the onCreate () of your application.java class, in your app's code.
XpressPlug.init(this.getApplication(), XpressPlugConstants.constants, modules);
After initializing XpressPlug, you can execute it and interact with it through the entrypoints. Read Interaction to learn more about the next step.