Index: DOM/EC/Winkelkar/impl/WinkelkarRepository.cls.xml
===================================================================
diff -u -r38486 -r38790
--- DOM/EC/Winkelkar/impl/WinkelkarRepository.cls.xml	(.../WinkelkarRepository.cls.xml)	(revision 38486)
+++ DOM/EC/Winkelkar/impl/WinkelkarRepository.cls.xml	(.../WinkelkarRepository.cls.xml)	(revision 38790)
@@ -25,6 +25,15 @@
 	Do ##class(TECH.ExceptionHandler).Throw(##class(TECH.Exceptions.InvalidInputException).%New("Voor dit type winkelkar ("_Type_" "_ApplicatieID_") is nog geen implementatie voorzien."))
 ]]></Implementation>
 </Method>
+
+<Method name="BestaatViaExterneId">
+<FormalSpec>ExterneId:%String</FormalSpec>
+<ReturnType>%Boolean</ReturnType>
+<Implementation><![CDATA[
+	Quit:(ExterneId="") $$$False
+	Quit ..BestaatViaFilter("ExterneId = ?", $LB(ExterneId))
+]]></Implementation>
+</Method>
 </Class>