docs: @SafeVarargs
      private final void notifyOnFinished(@NonNull final KeyType key, @Nullable final DataType data,
                                          @NonNull final ViewType view,
                                          @NonNull final ParamType... params) {
          for (Listener<DataType, KeyType, ViewType, ParamType> listener : listeners) {
              listener.onFinished(this, key, data, view, params);
          }
      }