From aaba51ccea12adcd3390a521661d6ed305fcad78 Mon Sep 17 00:00:00 2001
From: hduelme <hduelme@gmx.de>
Date: Sun, 1 Feb 2026 21:49:02 +0100
Subject: [PATCH] Remove unnecessary keySet() invocation

---
 .../ap/internal/model/NestedTargetPropertyMappingHolder.java   | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/processor/src/main/java/org/mapstruct/ap/internal/model/NestedTargetPropertyMappingHolder.java b/processor/src/main/java/org/mapstruct/ap/internal/model/NestedTargetPropertyMappingHolder.java
index 2b407e240c..f7b28b3f84 100644
--- a/processor/src/main/java/org/mapstruct/ap/internal/model/NestedTargetPropertyMappingHolder.java
+++ b/processor/src/main/java/org/mapstruct/ap/internal/model/NestedTargetPropertyMappingHolder.java
@@ -151,8 +151,7 @@ public NestedTargetPropertyMappingHolder build() {
                     entryByTP.getValue(),
                     groupedByTP.singleTargetReferences.get( targetProperty )
                 );
-                boolean multipleSourceParametersForTP =
-                    groupedBySourceParam.groupedBySourceParameter.keySet().size() > 1;
+                boolean multipleSourceParametersForTP = groupedBySourceParam.groupedBySourceParameter.size() > 1;
 
                 // All not processed mappings that should have been applied to all are part of the unprocessed
                 // defined targets