/// <summary>
        /// This method is used to verify the DataHash object related requirements.
        /// </summary>
        /// <param name="instance">Specify the DataHash object instance.</param>
        /// <param name="site">Specify the ITestSite instance.</param>
        public void VerifyDataHashObject(DataHashObject instance, ITestSite site)
        {
            // If the instance is not null and there are no parsing errors, then the SignatureObject related adapter requirements can be directly captured.
            if (null == instance)
            {
                site.Assert.Fail("The instance of type DataHashObject is null due to parsing error or type casting error.");
            }

            // Verify the stream object header related requirements.
            this.ExpectStreamObjectHeaderStart(instance.StreamObjectHeaderStart, instance.GetType(), site);

            this.ExpectSingleObject(instance.StreamObjectHeaderStart, site);
        }