@SplitRestriction's documented signature is incorrect

The documented signature for DoFn.SplitRestriction is 

List<RestrictionT> splitRestriction( InputT element, RestrictionT restriction);

This fails to compile with, for example:

@SplitRestriction split(long, OffsetRange): Must return void

It looks like the correct signature is:

void splitRestriction(InputT element, RestrictionT restriction,
    OutputReceiver<RestrictionT> restriction);