[feature] FieldNameConstants now works like Builder: Make whatever bits it does by hand and lombok fills in whatever is missing.

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

@@ -0,0 +1,59 @@
+import lombok.experimental.FieldNameConstants;
+import lombok.AccessLevel;
+@FieldNameConstants(asEnum = true,innerTypeName = "TypeTest") class FieldNameConstantsHandrolled1 {
+  public enum TypeTest {
+    field1(),
+    alsoAField(),
+    thirdField(),
+    <clinit>() {
+    }
+    private @java.lang.SuppressWarnings("all") TypeTest() {
+      super();
+    }
+  }
+  int field1;
+  int alsoAField;
+  int thirdField;
+  FieldNameConstantsHandrolled1() {
+    super();
+  }
+}
+@FieldNameConstants(asEnum = true,innerTypeName = "TypeTest") class FieldNameConstantsHandrolled2 {
+  public enum TypeTest {
+    field1(),
+    alsoAField(),
+    thirdField(),
+    <clinit>() {
+    }
+    public String foo() {
+      return name();
+    }
+    private @java.lang.SuppressWarnings("all") TypeTest() {
+      super();
+    }
+  }
+  int field1;
+  int alsoAField;
+  int thirdField;
+  FieldNameConstantsHandrolled2() {
+    super();
+  }
+}
+@FieldNameConstants class FieldNameConstantsHandrolled3 {
+  static class Fields {
+    public static final java.lang.String field1 = "field1";
+    public static final java.lang.String thirdField = "thirdField";
+    public static final int alsoAField = 5;
+    <clinit>() {
+    }
+    private @java.lang.SuppressWarnings("all") Fields() {
+      super();
+    }
+  }
+  int field1;
+  int alsoAField;
+  int thirdField;
+  FieldNameConstantsHandrolled3() {
+    super();
+  }
+}