Specify a set of logger names and the corresponding log levels that
    this log recorder will collect. For example, if you specify
    jenkins.model and INFO then any events triggered
    for jenkins.model or its descendents (e.g.
    jenkins.model.Jenkins) with the log level INFO or above will
    show up in this log recorder.
    
    If you have multiple entries, a log message will only be recorded if
    the most specific matching logger's level would collect it.
    
    Also see 
    this document for more about logging in Java and Jenkins.