code: public void testExecutionQueryByProcessDefinitionVersion(){
    assertEquals(2,runtimeService.createExecutionQuery().processDefinitionVersion(1).count());
    assertEquals(2,runtimeService.createExecutionQuery().processDefinitionVersion(2).count());
    assertEquals(0,runtimeService.createExecutionQuery().processDefinitionVersion(3).count());
    assertEquals(2,runtimeService.createExecutionQuery().processDefinitionVersion(1).list().size());
    assertEquals(2,runtimeService.createExecutionQuery().processDefinitionVersion(2).list().size());
    assertEquals(0,runtimeService.createExecutionQuery().processDefinitionVersion(3).list().size());
  }
  