add test for empty class

Author: timo-a

src/test/java/org/openrewrite/java/migrate/lombok/NegligentlyConvertEqualsTest.java

@@ -60,6 +60,21 @@ class A {
         );
     }
 
+    @Test
+    void noCostomMethodsNoAnnotation() {
+        rewriteRun(// language=java
+          java(
+            """
+              class A {
+
+                  int foo;
+
+              }
+              """
+          )
+        );
+    }
+
     @Test
     void replaceEqualsInPackage() {
         rewriteRun(// language=java