title: SLF4J log4j NoSuchMethodError on Category
body: <p>I'm using SLF4J + LogBack to handle my logging, and have the appropriate jars to route the other logging framework calls. However I've run across the issue noted here:
  <a href="http://www.slf4j.org/legacy.html#log4j-over-slf4j" rel="nofollow noreferrer">http://www.slf4j.org/legacy.html#log4j-over-slf4j</a></p>
  
  <p>Where in I'm getting a <code>NoSuchMethodError</code> on the call of an <code>Appender</code> (specifically <code>Category.getRoot()</code>).</p>
  
  <p>It mentions that using a <code>log4j.properties</code> or <code>log4j.xml</code> file should fix these issues, but I'm not exactly sure what that config file would look like (which appenders and categories to use), or where to place it (same location as the logback.xml?)</p>
  
  <p>I've also seen this:
  <a href="https://stackoverflow.com/questions/4028703/issues-replacing-log4j-with-logback-log4j-over-slf4j-jar-shortcomings">Issues replacing Log4j with LogBack, log4j-over-slf4j.jar shortcomings</a></p>
  
  <p>Which seems to be essentially the same question, but never really answered.</p>