'Map a logging level name to a key in the priority_names map.
This is useful in two scenarios: when custom levels are being
used, and in the case where you can\'t do a straightforward
mapping by lowercasing the logging level name because of locale-
specific issues (see SF #1524081).'

def mapPriority(self, levelName):

    return self.priority_map.get(levelName, 'warning')
