1 files changed, 1 insertions, 0 deletions
diff --git a/test/transform/resource/after-delombok/BuilderSingularWithPrefixesWithSetterPrefix.java b/test/transform/resource/after-delombok/BuilderSingularWithPrefixesWithSetterPrefix.java
index e2be79de..513c3fe4 100644
--- a/test/transform/resource/after-delombok/BuilderSingularWithPrefixesWithSetterPrefix.java
+++ b/test/transform/resource/after-delombok/BuilderSingularWithPrefixesWithSetterPrefix.java
@@ -19,6 +19,7 @@ class BuilderSingularWithPrefixesWithSetterPrefix {
 		}
 		@java.lang.SuppressWarnings("all")
 		public BuilderSingularWithPrefixesWithSetterPrefix.BuilderSingularWithPrefixesWithSetterPrefixBuilder withElems(final java.util.Collection<? extends String> elems) {
+			if (elems == null) throw new java.lang.NullPointerException("elems cannot be null");
 			if (this.elems == null) this.elems = new java.util.ArrayList<String>();
 			this.elems.addAll(elems);
 			return this;