/// <summary>
/// Throws an <see cref="System.ArgumentException"/> if the argument value
/// does not match the expected value as defined by the given function.
/// </summary>
/// <typeparam name="T">The type of the argument.</typeparam>
/// <param name="argValue">The argument value.</param>
/// <param name="expectedValue">The expected value.</param>
/// <param name="function">The comparison function to be used.</param>
/// <param name="argName">The argument name.</param>
public static void Is <T>(T argValue, T expectedValue, Func <T, T, bool> function, string argName)
{
Insist.Is <T>(argValue, expectedValue, function, argName, null);
}
