Returns true if the objectName (Model3DGroup or GeometryModel3D) has children (at least one - empty collection returns false). GeometryModel3D can have children if for it there was a Model3DGroup created (becasue of a hierarchy). In this case there is a (objectName + Reader3ds.GroupNameSuffix) in NamedObjects dictionary.

Returns true if the Model3DGroup or GeometryModel3D has children (at least one - empty collection returns false). GeometryModel3D can have children if for it there was a Model3DGroup created (becasue of a hierarchy). In this case there is a (objectName + Reader3ds.GroupNameSuffix) in NamedObjects dictionary.