use
This flag controls how the ReadingSystemEngine loads publications when you pass a RandomAccessDataSource.
If this flag is true, the ReadingSystemEngine internally creates a native ResourceProvider wrapping the RandomAccessDataSource if possible.
If this flag is false, the ReadingSystemEngine never creates ResourceProviders when you load a publication by RandomAccessDataSource. This reverts it back to how it worked in the 2.x.x versions of the framework.