This helps us mock the data access in our unit tests.

SUPPRESSWARNINGS

default constructor. Necessary for dynamic instantiation.

public QueueableProcessDataProvider()

This is the main method that will be called by the QueueableProcessManager. By extracting this method into a separate class, we can easily mock it in our unit tests.

public String getClassName(Id jobId)

String

String The name of the Apex class that just failed.