Major Description
Mapper release 1.1.13 created a regression in the treatment of Adapter implementations that indirectly inherit from Adapter.
"Indirect inheritance" is such that the type does not directly implement Adapter, but extends some other type that implements Adapter).
A brief look into the cause of the issue is that the "reverse" adapter key cannot be found/determined and causes a NullPointerException to be thrown when trying to utilize the null AdapterKey.
It should be noted that this behavior worked without issue in 1.1.12.
Attached is a test case that exemplifies the issue.