private void LoadOption(System.Reflection.FieldInfo field, ArgumentCollection argCollection)
{
object fieldValue = field.GetValue(this);
MethodInfo argCollectionExtractOption = argCollection.GetType().GetMethod("ExtractOptional");
MethodInfo genericExtractOption = argCollectionExtractOption.MakeGenericMethod(field.FieldType);
object[] args = new object[] { field.Name, fieldValue };
object newValue = genericExtractOption.Invoke(argCollection, args);
field.SetValue(this, newValue);
}