add support for Twig extension registered via Attributes

Author: Haehnchen

src/main/java/fr/adrienbrault/idea/symfony2plugin/stubs/indexes/TwigAttributeIndex.java

@@ -71,7 +71,7 @@ public static class TwigAttributeIndexer implements DataIndexer<String, String,
             }
 
             for (PhpClass phpClass : PhpPsiUtil.findAllClasses(phpFile)) {
-                for (Method method : phpClass.getMethods()) {
+                for (Method method : phpClass.getOwnMethods()) {
                     processMethodAttributes(phpClass, method, result);
                 }
             }
@@ -81,7 +81,7 @@ public static class TwigAttributeIndexer implements DataIndexer<String, String,
 
         private void processMethodAttributes(@NotNull PhpClass phpClass, @NotNull Method method, @NotNull Map<String, String> result) {
             for (PhpAttribute attribute : method.getAttributes()) {
-                String attributeFqn = getAttributeFqn(attribute);
+                String attributeFqn = attribute.getFQN();
                 if (attributeFqn == null) {
                     continue;
                 }
@@ -98,10 +98,5 @@ private void processMethodAttributes(@NotNull PhpClass phpClass, @NotNull Method
                 }
             }
         }
-
-        private String getAttributeFqn(@NotNull PhpAttribute attribute) {
-            ClassReference reference = attribute.getClassReference();
-            return reference != null ? reference.getFQN() : null;
-        }
     }
 }