public CeQueueDto setTaskType(String s) {
    checkArgument(s.length() <= 40, "Value of task type is too long: %s", s);
    this.taskType = s;
    return this;
  }
@Test
  void setTaskType_throws_NPE_if_argument_is_null() {
    assertThatThrownBy(() -> underTest.setTaskType(null))
      .isInstanceOf(NullPointerException.class);
  }