protected override Task OnAfterRenderAsync(bool firstRender)
        {
            if (firstRender)
            {
                ValidatorTextStyle.CopyTo(UsernameValidator);
                ValidatorTextStyle.CopyTo(PasswordValidator);
            }

            return(base.OnAfterRenderAsync(firstRender));
        }
        protected override void HandleUnknownAttributes()
        {
            if (AdditionalAttributes?.Count > 0)
            {
                FailureTextStyle.FromUnknownAttributes(AdditionalAttributes, "FailureTextStyle-");
                TitleTextStyle.FromUnknownAttributes(AdditionalAttributes, "TitleTextStyle-");
                LabelStyle.FromUnknownAttributes(AdditionalAttributes, "LabelStyle-");
                CheckBoxStyle.FromUnknownAttributes(AdditionalAttributes, "CheckBoxStyle-");
                HyperLinkStyle.FromUnknownAttributes(AdditionalAttributes, "HyperLinkStyle-");
                InstructionTextStyle.FromUnknownAttributes(AdditionalAttributes, "InstructionTextStyle-");
                TextBoxStyle.FromUnknownAttributes(AdditionalAttributes, "TextBoxStyle-");
                LoginButtonStyle.FromUnknownAttributes(AdditionalAttributes, "LoginButtonStyle-");
                ValidatorTextStyle.FromUnknownAttributes(AdditionalAttributes, "ValidatorTextStyle-");
            }

            base.HandleUnknownAttributes();
        }