@Test
  public void isValidNoId() {
    ValidationResult result = UpdateServiceBrokerRequest.builder().build().isValid();

    assertEquals(INVALID, result.getStatus());
    assertEquals("service broker id must be specified", result.getMessages().get(0));
  }
  @Test
  public void isValidNoId() {
    ValidationResult result = SummaryApplicationRequest.builder().build().isValid();

    assertEquals(INVALID, result.getStatus());
    assertEquals("application id must be specified", result.getMessages().get(0));
  }
  @Test
  public void isValidNoId() {
    ValidationResult result = ListSpaceAuditorsRequest.builder().build().isValid();

    assertEquals(INVALID, result.getStatus());
    assertEquals("space id must be specified", result.getMessages().get(0));
  }
  @Test
  public void isValidNoUsername() {
    ValidationResult result =
        RemoveOrganizationBillingManagerByUsernameRequest.builder()
            .organizationId("test-organization-id")
            .build()
            .isValid();

    assertEquals(INVALID, result.getStatus());
    assertEquals("username must be specified", result.getMessages().get(0));
  }
  @Test
  public void isValidNoId() {
    ValidationResult result =
        UpdateOrganizationRequest.builder()
            .name("test-name")
            .quotaDefinitionId("test-quota-definition-id")
            .status("test-status")
            .build()
            .isValid();

    assertEquals(INVALID, result.getStatus());
    assertEquals("organization id must be specified", result.getMessages().get(0));
  }