Allow the library user to configure the strictness of the constants lookup. So when the library is in strict mode it will fail if you try to use a constant not defined in the namespaces. The "liberal" mode will work as it's now, allowing to use anything for the cases you want some new property value unsupported in the library.
Allow the library user to configure the strictness of the constants lookup. So when the library is in strict mode it will fail if you try to use a constant not defined in the namespaces. The "liberal" mode will work as it's now, allowing to use anything for the cases you want some new property value unsupported in the library.