public DialogueImporter(DialogueSystem system,List<DialogueState> turns){
  this.system=system;
  this.turns=turns;
}

public DialogueImporter ( DialogueSystem system , List < DialogueState > turns ) { this . system = system ; this . turns = turns ; }
creates a new dialogue importer attached to a particular dialogue system , and with an ordered list of turns ( encoded by their dialogue state ) .
