TreeIndex: Pass [null] for skip/limit to select instead of just null.
TreeIndex: Pass [null] for skip/limit to select instead of just null.

Let's keep the API consistent regardless of whether sortRequired is
true or not.

TanayParikh/foam2,foam-framework/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,foam-framework/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,TanayParikh/foam2,TanayParikh/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,TanayParikh/foam2