public async Task FetchAllByIdentifiers()
        {
            var mailTemplates = await _mailTemplateRepository.FetchAllByIdentifiersAsync(TEST_TEMPLATES, false);

            bool containsFirst  = mailTemplates.Any(x => x.Identifier == TEST_TEMPLATE_ID);
            bool containsSecond = mailTemplates.Any(x => x.Identifier == TEST_TEMPLATE_ID_GROUPS);
            bool containsThird  = mailTemplates.Any(x => x.Identifier == TEST_TEMPLATE_ID_SECTIONS);

            Assert.IsTrue(containsFirst && containsSecond && containsThird);
        }