title: Can't access method of companion class from companion object
body: <p>I thought that I can access every method of the companion class from my companion object. But I can't?</p>
  
  <pre><code>class EFCriteriaType(tag:String) extends CriteriaType
  {
    // implemented method of CriteriaType
    def getTag = this.tag   
  }
  
  object EFCriteriaType
  {
    var TEXT: CriteriaType = new EFCriteriaType("text")
  
    override def toString = getTag
  }
  </code></pre>
  
  <p>Compiler error:
  not found: value getTag</p>
  
  <p>What I'm doing wrong?</p>