alab.siesta.BusinessLogic.Model.Structs.LastChecked">LastChecked</a>])</span>
      </span>
      
      <p class="shortcomment cmt">Extracts the event type pairs from an RDD that contains the complete traces.</p><div class="fullcomment"><div class="comment cmt"><p>Extracts the event type pairs from an RDD that contains the complete traces. If there are previously indexed pairs
this process will only calculate the new event type pairs by utilizing the information stored in the LastChecked
table. Additionall