public static void MImage_GetHashCode_NotEqual()
        {
            MImage image  = CreateImage();
            MImage image2 = image.Modify();

            Assert.NotEqual(image.GetHashCode(), image2.GetHashCode());
        }
        public static void MImage_GetHashCode_Equal()
        {
            MImage image = CreateImage();

            Assert.Equal(image.GetHashCode(), image.GetHashCode());
        }