Renamed loader.parsers.Handler to loader.parsers.HandlerBridge, making
clear that this class is not terminal.
OPEN - task 9: Move the testing workbench to the utils package and
streamline it. 
https://github.com/Y-P-/data-processing-binding/issues/issue/9
OPEN - task 9: Move the testing workbench to the utils package and
streamline it. 
https://github.com/Y-P-/data-processing-binding/issues/issue/9