title: OSGI LogService.log method does not work!
body: <p>I have the weirdest bug, when writting my LogHelper class.</p>
  
  <p>I am using <strong>org.osgi.service.log.LogService</strong> (with Apache Felix implementation).</p>
  
  <p>Now I can call the: </p>
  
  <pre><code>LogService.log(int level, String message)
  </code></pre>
  
  <p>with no problems, but when I try to use the one with the exception:</p>
  
  <pre><code>LogService.log(int level, String message, Throwable exception)
  </code></pre>
  
  <p>Eclipse highlights the call as wrong, and gives me this wierd error message:</p>
  
  <blockquote>
    <p>The type org.osgi.framework.ServiceReference cannot be resolved. 
    It is indirectly referenced from required .class files</p>
  </blockquote>