* DirectParsoidClient: Actually allow null to be provided.
Previously we tried to call methods on it unconditionally.
* VRSParsoidClient: Require the param to be provided (even if null).
No reason to diverge from the interface, which requires it.
Change-Id: Id9a450dc8b8eb3e82cf87718b96975e5a3c6180c
This follows up the initial fix with additional sanitation and a
regression test. See I21c7a2b2541061a858a9791a2cb12866acd38dc5.
Bug: T318083
Change-Id: I4e433e711c068336a888f4aafa243455764fd710
This makes the "direct" client and the VRS based client
implement the same interface, so the caller doesn't have to know
which one it is using.
It looks like ParsoidHelper will not be needed if we use this approach.
Change-Id: Ib1c1d7355951fc0765227dd01a9edfc554fc448d
