title: scala - cannot resolve symbol Map
body: <p>I´m writing a simple code to test <code>CEP library</code> in Scala, maven dependency version <strong>1.1-SNAPSHOT</strong>. My code:</p>
  
  <pre><code>val res = igd.filter(_._2 == 13)
  val pattern: Pattern[(Long,String,String,Long), _] = Pattern.begin[(Long,String,String,Long)]("start").where(_._3 == true).next("end").where(_._3 == false)
  val patternStream: PatternStream[(Long,String,String,Long)] = CEP.pattern(res, pattern)
  
  def selectFn(pattern : mutable.Map[String,(Long,String,String,Long)]): String = {
    val startEvent = pattern.get("start").get
    "Alerta:"+startEvent._1+": Pattern"
     }
  
  val patternStreamSelected = patternStream.select(selectFn(_)).print
  </code></pre>
  
  <p>In <code>selecFn</code> the Map is in red with the message <code>cannot resolve symbol Map</code> 
  Where is the problem?? Thank you in advance. </p>