public void GetContactlistsTest()
        {
            // TODO: add unit test for the method 'GetContactlists'
            bool?  includeImportStatus = null; // TODO: replace null with proper value
            bool?  includeSize         = null; // TODO: replace null with proper value
            int?   pageSize            = null; // TODO: replace null with proper value
            int?   pageNumber          = null; // TODO: replace null with proper value
            string filterType          = null; // TODO: replace null with proper value
            string name      = null;           // TODO: replace null with proper value
            string sortBy    = null;           // TODO: replace null with proper value
            string sortOrder = null;           // TODO: replace null with proper value
            var    response  = instance.GetContactlists(includeImportStatus, includeSize, pageSize, pageNumber, filterType, name, sortBy, sortOrder);

            Assert.IsInstanceOf <ContactListEntityListing> (response, "response is ContactListEntityListing");
        }