internal SharedPropertyGroup(ISharedPropertyGroup grp) { this._x = grp; }
internal SharedPropertyGroup(ISharedPropertyGroup propertyGroup) { this.propertyGroup = propertyGroup; }
internal SharedPropertyGroup(ISharedPropertyGroup grp) { this._x = grp; }
internal SharedPropertyGroup (ISharedPropertyGroup propertyGroup) { this.propertyGroup = propertyGroup; }