While these have not yet caused problems, we should probably deprecate
the whole confusing "index aliasing" feature. Cleaning this up needs to
be done first.
Method MWLBFactory::setSchemaAliases() is being considered private due
to the @internal notation, and so is being removed without deprecation.
Bug: T233240
Change-Id: Ib04b7bc4af53382fde01bd8550cc7e361124255f
