code: public static void init(Context context, String apiKey) {
      RaygunClient.apiKey = apiKey;
      RaygunClient.context = context;
      RaygunClient.appContextIdentifier = UUID.randomUUID().toString();
  
      RaygunLogger.d("Configuring Raygun (v"+RaygunSettings.RAYGUN_CLIENT_VERSION+")");
  
      try {
        RaygunClient.version = context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionName;
      } catch (PackageManager.NameNotFoundException e) {
        RaygunClient.version = "Not provided";
        RaygunLogger.w("Couldn't read application version from calling package");
      }
    }
docs: Initializes the Raygun client with your Android application's context and your
  Raygun API key. The version transmitted will be the value of the versionName attribute in your manifest element.
  @param context The Android context of your activity
  @param apiKey An API key that belongs to a Raygun application created in your dashboard