/// <summary>
/// Sets route param's default value with rules:
/// a null string sets no defaults, an empty string means optional; value type with default value is ignored;
/// nullable means optional; classes except string are ignored. Rules are implemented in <see cref="Extensions.SetDefaultValue"/> method
/// </summary>
/// <param name="info"></param>
/// <param name="modelInstance"></param>
/// <param name="data"></param>
protected virtual void SetDefaultValue(MemberInfo info, object modelInstance, IDictionary<string, object> data)
{
info.SetDefaultValue(modelInstance,data);
}
