More Play stubs improvements

java/ql/test/stubs/playframework-2.6.x/play/i18n/Lang.java

@@ -6,4 +6,4 @@ package play.i18n;
 
 import java.util.*;
 
-public class Lang /* extends play.api.i18n.Lang */ {}
+public class Lang {}

java/ql/test/stubs/playframework-2.6.x/play/i18n/Langs.java

@@ -1,4 +1,3 @@
 package play.i18n;
 
-/** A Lang supported by the application. */
 public class Langs {}

java/ql/test/stubs/playframework-2.6.x/play/mvc/Http.java

@@ -155,8 +155,6 @@ public class Http {
 
   public static class Headers {
 
-    private final Map<String, List<String>> headers;
-
     public Headers(Map<String, List<String>> headers) {}
 
     public Map<String, List<String>> toMap() {
@@ -756,7 +754,9 @@ public class Http {
         boolean secure,
         boolean httpOnly) {}
 
-    public static CookieBuilder builder(String name, String value) {}
+    public static CookieBuilder builder(String name, String value) {
+      return null;
+    }
 
     public String name() {
       return "";
@@ -786,15 +786,15 @@ public class Http {
       return true;
     }
 
-    public Optional<SameSite> sameSite() {}
+    public Optional<SameSite> sameSite() {
+      return null;
+    }
 
     public enum SameSite {
       STRICT("Strict"),
       LAX("Lax"),
       NONE("None");
 
-      private final String value;
-
       SameSite(String value) {}
 
       public String value() {
@@ -820,7 +820,9 @@ public class Http {
     }
 
     @Deprecated
-    public CookieBuilder withMaxAge(Integer maxAge) {}
+    public CookieBuilder withMaxAge(Integer maxAge) {
+      return null;
+    }
 
     public CookieBuilder withMaxAge(Duration maxAge) {
       return null;