/// <summary>
/// This method creates a tag. It is idempotent
/// </summary>
/// <param name="tag">String of less than 40 characters and without spaces or non-ASCII characters</param>
/// <returns><c>true</c> if the tag was created; <c>false</c> otherwise.</returns>
/// <exception cref="ArgumentException">If the <paramref name="tag"/> is badly formatted.</exception>
/// <exception cref="CritSendException">In case of soap error, contains the message.</exception>
public bool CreateTag(string tag)
{
var result = false;
CallWebMethod(delegate(Authentication auth)
{
result = _client.createTag(auth, tag);
}, true);
return(result);
}