/// <summary>
/// Whether given tag is valid?
/// </summary>
public static bool IsValidTag
(
[CanBeNull] string tag
)
{
if (string.IsNullOrEmpty(tag))
{
return(false);
}
bool result = _goodCharacters.CheckText(tag) &&
Normalize(tag) != "0" &&
tag.Length < 6; // ???
return(result);
}
