add missing license header

impl/src/test/java/org/jboss/seam/solder/test/compat/visibility/AnnotatedTypeObserverExtension.java

@@ -1,3 +1,19 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2011, Red Hat, Inc. and/or its affiliates, and individual
+ * contributors by the @authors tag. See the copyright.txt in the
+ * distribution for a full listing of individual contributors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.jboss.seam.solder.test.compat.visibility;
 
 import java.util.ArrayList;