From 3af8131b9e1fa4e5db7bf819660a95fb56b2b825 Mon Sep 17 00:00:00 2001
From: Roland Grunberg <rgrunber@redhat.com>
Date: Wed, 13 Nov 2024 09:51:27 -0500
Subject: [PATCH] Add 'removeUnusedLambdaParameters' to the cleanup settings.

Signed-off-by: Roland Grunberg <rgrunber@redhat.com>
---
 document/_java.learnMoreAboutCleanUps.md | 52 ++++++++++++++++++++++++
 package.json                             |  3 +-
 2 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/document/_java.learnMoreAboutCleanUps.md b/document/_java.learnMoreAboutCleanUps.md
index a6b8e3cbd..d4c056577 100644
--- a/document/_java.learnMoreAboutCleanUps.md
+++ b/document/_java.learnMoreAboutCleanUps.md
@@ -405,4 +405,56 @@ public class A {
         Parser a12;
     }
 }
+```
+
+### `removeUnusedLambdaParameters`
+
+Rename unused lambda parameters, or unused pattern variables to `_`.
+
+For example:
+
+```java
+public class Unused {
+
+    private interface J {
+        public void run(String a, String b);
+    }
+
+    public static void main(String[] args) {
+        record R(int i, long l) {}
+
+        J j = (a, b) -> System.out.println(a);
+        j.run("a", "b");
+
+        R r = new R(1, 1);
+        switch (r) {
+            case R(_, long l) -> {}
+            case R r2 -> {}
+		}
+    }
+}
+```
+
+becomes:
+
+```java
+public class Unused {
+
+	private interface J {
+        public void run(String a, String b);
+    }
+
+    public static void main(String[] args) {
+        record R(int i, long l) {}
+
+        J j = (a, _) -> System.out.println(a);
+        j.run("a", "b");
+
+        R r = new R(1, 1);
+        switch (r) {
+            case R(_, _) -> {}
+            case R _ -> {}
+        }
+    }
+}
 ```
\ No newline at end of file
diff --git a/package.json b/package.json
index f702896ca..8fbaabe8b 100644
--- a/package.json
+++ b/package.json
@@ -1313,7 +1313,8 @@
                 "switchExpression",
                 "tryWithResource",
                 "renameFileToType",
-                "organizeImports"
+                "organizeImports",
+                "removeUnusedLambdaParameters"
               ]
             },
             "default": [