public void start() {
    myBatis.start();
  }
@Test
  void should_start_mybatis_instance() {
    var myBatis = mock(MyBatis.class);
    var startMyBatis = new StartMyBatis(myBatis);
    startMyBatis.start();
    verify(myBatis).start();
    verifyNoMoreInteractions(myBatis);
  }