[i623] added eclipse code for generating @javax.annotation.Generated, and refactored java impl to reduce DRY violations. -f pretty now includes skipping generation of this annotation, and updated ALL the test cases.

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

@@ -10,7 +10,7 @@ public class NonNullWithAlternateException {
         }
     System.out.println(arg);
   }
-  public @java.lang.SuppressWarnings("all") void setTest(final @lombok.NonNull String test) {
+  public @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") void setTest(final @lombok.NonNull String test) {
     if ((test == null))
         {
           throw new java.lang.IllegalArgumentException("test is null");