private void onDataSourceFailed(int index, DataSource<T> dataSource) {
      // NULLSAFE_FIXME[Parameter Not Nullable]
      closeSafely(tryGetAndClearDataSource(index, dataSource));
      if (index == 0) {
        mDelayedError = dataSource.getFailureCause();
        mDelayedExtras = dataSource.getExtras();
      }
      maybeSetFailure();
    }
Creates a new data source supplier with increasing-quality strategy with optional lazy state
creation.

<p>Note: for performance reasons the list doesn't get cloned, so the caller of this method
should not modify the list once passed in here.

@param dataSourceSuppliers list of underlying suppliers
@param dataSourceLazy if true, the state of data source would be created only if necessary
fbcore/src/main/java/com/facebook/datasource/IncreasingQualityDataSourceSupplier.java