The host's placement frame on storey storeyExpressId, composed through
every PlacementRelTo hop the same way the storey's wall axes are
(extractWallSegmentsForStorey), so a point read against one lines up
with the other. Null when the host has no readable placement.
The host's placement frame on storey
storeyExpressId, composed through everyPlacementRelTohop the same way the storey's wall axes are (extractWallSegmentsForStorey), so a point read against one lines up with the other. Null when the host has no readable placement.