public void CanValidateRequiredObject()
{
StringBuilder emptyStringBuilder = null;
var instanceOfStringBuilder = new StringBuilder();
CustomAssert.ThrowsWithExceptionMessage<BusinessRuleViolationException>(() => emptyStringBuilder.Required(), "StringBuilder is required");
CustomAssert.ThrowsWithExceptionMessage<BusinessRuleViolationException>(() => emptyStringBuilder.Required("This value is required"), "This value is required");
Assert.DoesNotThrow(() => instanceOfStringBuilder.Required());
}