This view is meaningful only for a static fragment of the hierarchy
Objects' properties may change, but not which properties they have.
Therefore, dynamic elements of the hierarchy (see SetAccess )
do not implement service PropertyHierarchy .
If such elements occur as properties or subproperties of an implementation,
it is not specified whether direct subproperty access using
::com::sun::star::beans::XHierarchicalPropertySet or
::com::sun::star::beans::XMultiHierarchicalPropertySet can
be used to access descendants of such elements.
Similarly, information about such descendants may not be available from
the ::com::sun::star::beans::XHierarchicalPropertySetInfo
the implementation provides.
If an implementation is part of a read-only view of the hierarchy,
all properties and subproperties will be reported as having attribute
PropertyAttribute::READONLY set,
and attempts to change property values will fail.