The parent is always an OAccessible subclass, so use that more concrete type for the parent param of the ctor instead of the abstract XAccessible UNO interface. Change-Id: Icaeca70a28b87c2b2f9e5b07581777f0dd4cec3c Reviewed-on: https://gerrit.libreoffice.org/c/core/+/210622 Reviewed-by: Michael Weghorn <m.weghorn@posteo.de> Tested-by: Jenkins