docs: public synchronized void initialize() {
          if (!isInitialized()) {
              fillMethodIndex();
              try {
                  addProperties();
              } catch (Throwable e) {
                  if (!AndroidSupport.isRunningAndroid()) {
                      UncheckedThrow.rethrow(e);
                  }
                  // Introspection failure...
                  // May happen in Android
              }
              initialized = true;
          }
      }