public void EntitiesWithEqualIdsShouldBeEqual()
        {
            // Arrange
            var first  = new UserSeller().SetId("12345678901234567890123456789012");
            var second = new UserSeller().SetId("12345678901234567890123456789012");

            // Act
            var result = first == second;

            // Arrange
            result.Should().BeTrue();
        }
        public void EntitiesWithDifferentIdsShouldNotBeEqual()
        {
            // Arrange
            var first  = new UserSeller().SetId("12345678901234567890123456789012");
            var second = new UserSeller().SetId("1234567890123456789012345678901233");

            // Act
            var result = first == second;

            // Arrange
            result.Should().BeFalse();
        }