Looking at content bindings at the same time as regular bindings makes a
lot of sense, as long as the proposed changes don't result in the loss
of any well-defined, workable functionality (e.g., tightening the
restriction that a property P1 that is unidirectionally bound to another
property P2
There has been some discussion in this PR
https://github.com/openjdk/jfx/pull/533 on the semantics of
unidirectional and bidirectional bindings.
I think we've come to the understanding that unidirectional and
bidirectional bindings cannot be meaningfully used at the same time,
and such usage shoul