[fixes #2682] Fix NPE, always add Javadoc return statement

test/transform/resource/after-ecj/WithMethodMarkedDeprecatedAnnOnly.java

@@ -4,6 +4,9 @@ class WithMethodMarkedDeprecatedAnnOnly {
   WithMethodMarkedDeprecatedAnnOnly(int annotation) {
     super();
   }
+  /**
+   * @return a clone of this object, except with this updated property (returns {@code this} if an identical value is passed).
+   */
   public @java.lang.Deprecated @java.lang.SuppressWarnings("all") WithMethodMarkedDeprecatedAnnOnly withAnnotation(final int annotation) {
     return ((this.annotation == annotation) ? this : new WithMethodMarkedDeprecatedAnnOnly(annotation));
   }