code: public void testDeleteDeploymentWithStartSignalEvents6(){
    String deploymentId1=deployStartSignalTestProcess();
    String deploymentId2=deployProcessWithoutEvents();
    String deploymentId3=deployStartSignalTestProcess();
    String deploymentId4=deployProcessWithoutEvents();
    runtimeService.signalEventReceived("myStartSignal");
    assertEquals(0,runtimeService.createExecutionQuery().count());
    repositoryService.deleteDeployment(deploymentId2,true);
    repositoryService.deleteDeployment(deploymentId3,true);
    runtimeService.signalEventReceived("myStartSignal");
    assertEquals(0,runtimeService.createExecutionQuery().count());
    repositoryService.deleteDeployment(deploymentId1,true);
    runtimeService.signalEventReceived("myStartSignal");
    assertEquals(0,runtimeService.createExecutionQuery().count());
    cleanup(deploymentId4);
  }
  