From 9fae5714129be8fe6e215a742ca556c2c59ff37e Mon Sep 17 00:00:00 2001
From: Grahame Grieve <grahameg@gmail.ccom>
Date: Mon, 11 Dec 2023 15:37:14 +1100
Subject: [PATCH] fix NPE in CDA check

---
 .../src/main/java/org/hl7/fhir/r5/elementmodel/Property.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/Property.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/Property.java
index 720606484..128c7ce45 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/Property.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/Property.java
@@ -447,7 +447,7 @@ public class Property {
 
 
   private boolean isCDAElement(StructureDefinition sd) {
-    return sd.getUrl().startsWith(Constants.NS_CDA_ROOT);
+    return sd.hasUrl() && sd.getUrl().startsWith(Constants.NS_CDA_ROOT);
   }