/// <summary>
/// Throws an <see cref="System.InvalidOperationException"/> if the given argument value
/// exists in the collection provided.
/// </summary>
/// <typeparam name="T">The type of the argument.</typeparam>
/// <param name="argValue">The argument value.</param>
/// <param name="disallowed">The collection of disallowed values.</param>
/// <param name="argName">The argument name.</param>
public static void NotIn <T>(T argValue, IEnumerable <T> disallowed, string argName)
{
Insist.NotIn(argValue, disallowed, argName, null);
}
