RFR: 8375588: Enhanced property metadata [v2]

[John Hendrikx]

On Wed, 21 Jan 2026 17:43:47 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

> two-tiered: I meant one set of normally declared properties, the other set of properties that have a meaning only in the context of some layout container (and they must be cleared when the node is moved to another container).

I think the need for clearing is a bit overblown; currently when you do `HBox.setMargin(node, margin)` nobody is clearing this either when the node is moved, so I don't see this as an urgent requirement now.  Clearing is possible, but it is a user task:  `HBox.setMargin(node, null)`.

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PR Comment: https://git.openjdk.org/jfx/pull/2015#issuecomment-3780725721