| bag | The attribute bag. |
| cc | The creation context. |
bool True if the factory accepts the content of the attribute bag. False otherwise.
Returns true if the factory accepts the content of the attribute bag.
Use this function to validate the content of the attribute bag against the requirements of your factory. If a required attribute is missing or if an attribute value is incorrect, return false. Otherwise, if the bag content is acceptable to your factory, return true.