code: function dumpDatabase(db, allzones) {
    var sources = db.getSources();
    for (var n = 0; n < sources.length; n++) {
      util.logContextInfo(sources[n].getContextInfo());
    }
  
    var zones = db.getZones();
    if (!zones.length) {
      console.log('No zones');
      return 0;
    }
  
    var count = allzones ? zones.length : 1;
    for (var i = 0; i < count; ++i) {
      var zone = zones[i];
      var eventList = zone.getEventList();
      var it = eventList.begin();
      for (; !it.done(); it.next()) {
        util.logEvent(it, zone);
      }
  
    }
    return 0;
  }
docs: Dump the database.
  @param {!wtf.db.Database} db Database.
  @param {!boolean} allzones Whether it's needed to dump all the zones or just the first one
  @return {number} Return code.