Your store may require developers to supply additional configuration information during initialization, for which your module can register a configuration instance that implements the
var config = new MyConfiguration(); // Implements IStoreConfiguration
When developers request an instance of your configuration type, Unity IAPAbbreviation of Unity In App Purchase
See in Glossary first tries to cast your store implementation to the configuration type. Only if that cast fails will any instance bound via
BindConfiguration will be used.