chore(engine): add license header

related to CAM-13569

engine/src/test/java/org/camunda/bpm/engine/test/api/mgmt/IncidentMultipleProcessingTest.java

@@ -1,4 +1,20 @@
-package org.camunda.bpm.engine.test.api.mgmt;
+/*
+ * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
+ * under one or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information regarding copyright
+ * ownership. Camunda licenses this file to you under the Apache License,
+ * Version 2.0; 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.camunda.bpm.engine.test.api.mgmt;
 
 import org.camunda.bpm.engine.ManagementService;
 import org.camunda.bpm.engine.RuntimeService;