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Returns a list of loggers along with their current log levels. Entries are sorted by the logger's name. A named logger is one that could be one created by the application classes using its classname using the LoggerFactory.getLogger method or an ancestor package name (that is specified either via the log4j.properties file used by the worker, or via this API). 

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If the name of a logger is specified, only return the level to which that logger is logging writing messages at. This level may be set by a log4j.properties file, or by this API. If neither of those sources specified a level, log4j uses the level of an ancestor that was set by one of these means (the root logger's level is used if none of the other ancestor had a level set to it).

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