question: protected void createContainer ( ) throws Throwable { sendCreateContainerRequest ( ) ; waitForPropertyValue ( provisioningTaskLink , MockTaskState . class , "taskInfo.stage" , TaskState . TaskStage . FINISHED ) ; verifyContainerStateExists ( containerStateReference ) ; sendGetContainerStateRequest ( ) ; containerId = containerState . id ; assertNotNull ( "Container ID is null" , containerId ) ; assertEquals ( "container id should be 64 characters long: " + containerId , 64 , containerId . length ( ) ) ; }
target:  Create a container, store its id in this.containerId