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

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

@@ -37,6 +37,9 @@ class With5 {
   With5(String foo) {
     super();
   }
+  /**
+   * @return a clone of this object, except with this updated property (returns {@code this} if an identical value is passed).
+   */
   public @java.lang.SuppressWarnings("all") With5 withFoo(final String foo) {
     return ((this.foo == foo) ? this : new With5(foo));
   }
@@ -48,6 +51,9 @@ class With6 {
   With6(String foo) {
     super();
   }
+  /**
+   * @return a clone of this object, except with this updated property (returns {@code this} if an identical value is passed).
+   */
   public @java.lang.SuppressWarnings("all") With6 withFoo(final String foo) {
     return ((this.foo == foo) ? this : new With6(foo));
   }