public GivenACustomFieldClientInstance()
        {
            IApplicationContext  applicationContext  = new ApplicationContext();
            IConfigurationRoot   configurationRoot   = ConfigurationRootFactory.Create(applicationContext);
            IConfigurationGetter configurationGetter = new ConfigurationGetter(configurationRoot);

            var projectContextOptions = configurationGetter.GetOptions <ProjectContextOptions>();
            var clientOptions         = configurationGetter.GetOptions <CsomClientOptions>();

            var projectContext = ProjectContextFactory.Build(projectContextOptions);

            _client           = new CustomFieldClient(projectContext, clientOptions);
            _entityTypeClient = new EntityTypeClient(projectContext, clientOptions);
        }