public void WhenConvertBase64StringToBytes()
{
var bytes = System.Text.Encoding.UTF8.GetBytes("Hello world! :)");
var req1 = Convert.ToBase64String(bytes);
var val1 = new StringValue(req1, null);
var res1 = val1.FromBase64().Value;
res1.SequenceEqual(bytes).Should().BeTrue();
}