title: How to check if an specific logger exists in Logback
body: <p>Basically I need to check if an specific logger exists so I can change its level. Something like the following pseudo-code:</p>
  
  <pre><code>Logger myLogger =  (Logger) LoggerFactory.getLogger( "com.logger.to.Change");
  
  if ( validateThatLoggerExist (myLOgger))  // check logger effectively exist
     myLogger.setLeve(Level.NEW_LEVEL)     // Change logger log level
  else
     throw new LoggerNotFoundExeption()   // do somethig
  </code></pre>