public void Remove_ExistingGuidPassed_RemovesOneItem()
        {
            // Arrange
            var existingGuid = new Guid("ab2bd817-98cd-4cf3-a80a-53ea0cd9c200");

            // Act
            var okResponse = _controller.Remove(existingGuid);

            // Assert
            Assert.Equal(2, _service.GetAllItems().Count());
        }
        public ActionResult <IEnumerable <SchoolItem> > Get()
        {
            var items = _service.GetAllItems();

            return(Ok(items));
        }