Optional alignmentAlignment of property items within the pane of the property pane. If undefined, it will default to Left.
Optional collapsedInitial expander state of sub pane. If undefined, it will default to false.
Optional directionDetermines layout direction of sub pane property items. If undefined, it will default to Vertical.
Optional hasDetermines if sub pane should have an expander. If undefined, it will default to true.
Optional hasAdds additional margins to sub pane. If undefined, it will default to true.
Optional titleLocalized title of the property pane
Optional properties for Sub Pane property item