/// <summary>
/// Throws whether the value is null.
/// </summary>
/// <typeparam name="T">A class type.</typeparam>
/// <param name="expression">The expression property.</param>
/// <param name="message">The message.</param>
public static void IsNull <T>(Expression <Func <T> > expression, string message = null)
where T : class
{
ThrowIf <ArgumentException>
.IsNull(expression, message);
}
/// <summary>
/// Throws whether the value is equal to an other specified value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="expression">The expression property.</param>
/// <param name="testValue">The specified value.</param>
/// <param name="message">The message.</param>
public static void IsEqualTo <T>(Expression <Func <T> > expression, T testValue = default(T), string message = null)
{
ThrowIf <ArgumentOutOfRangeException>
.IsEqualTo(expression, testValue, message);
}
/// <summary>
/// Throws whether a specified string is null or an Empty string.
/// </summary>
/// <param name="expression">The expression property.</param>
/// <param name="message">The message.</param>
public static void IsNullOrEmpty(Expression <Func <string> > expression, string message = null)
{
ThrowIf <ArgumentNullException>
.IsNullOrEmpty(expression, message);
}