Test that `SuggestedFixes.replaceIncludingComments` removes Markdown Javadoc.

kak@ points out that this may have been addressed way back in https://github.com/google/error-prone/commit/2dde25434696cc2f87e76b64bf60d8875da36a09.

PiperOrigin-RevId: 943937282

core/src/test/java/com/google/errorprone/bugpatterns/UnusedMethodTest.java

diff --git a/core/src/test/java/com/google/errorprone/bugpatterns/UnusedMethodTest.java b/core/src/test/java/com/google/errorprone/bugpatterns/UnusedMethodTest.java
index 27e4843..f52abd9 100644
--- a/core/src/test/java/com/google/errorprone/bugpatterns/UnusedMethodTest.java
+++ b/core/src/test/java/com/google/errorprone/bugpatterns/UnusedMethodTest.java
@@ -254,6 +254,44 @@
   }
 
   @Test
+  public void removal_markdownJavadocs() {
+    refactoringHelper
+        .addInputLines(
+            "UnusedWithComment.java",
+            """
+            package unusedvars;
+
+            public class UnusedWithComment {
+              /// Method comment
+              private void test1() {}
+
+              /// First line of method comment
+              /// Second line of method comment
+              private void test2() {}
+
+              // Keep this comment
+
+              /// First line of method comment
+              ///
+              /// Second line of method comment
+              private void test3() {}
+            }
+            """)
+        .addOutputLines(
+            "UnusedWithComment.java",
+            """
+            package unusedvars;
+
+            public class UnusedWithComment {
+
+              // Keep this comment
+
+            }
+            """)
+        .doTest();
+  }
+
+  @Test
   public void usedInLambda() {
     helper
         .addSourceLines(