@UtilityClass handlers now more intelligent about inner types of implicitly static contexts (enums, interfaces, and annotation declarations). Also added tests to test for these.

test/transform/resource/before/UtilityClassErrors.java

@@ -11,4 +11,12 @@ class UtilityClassErrors1 {
 }
 @lombok.experimental.UtilityClass
 enum UtilityClassErrors2 {
+}
+class UtilityClassErrors3 {
+	class NonStaticInner {
+		@lombok.experimental.UtilityClass
+		class ThisShouldFail {
+			private String member;
+		}
+	}
 }