function itemExists(guid) {
    let addon = this.reconciler.getAddonStateFromSyncGUID(guid);

    return !!addon;
  }
/**
   * Provide core Store API to determine if a record exists.
   */
Provide core Store API to determine if a record exists.
Provide core Store API to determine if a record exists .
function itemExists(guid) {
    let addon = this.reconciler.getAddonStateFromSyncGUID(guid);
    return !!addon;
  }
function itemExists ( guid ) { let addon = this . reconciler . getAddonStateFromSyncGUID ( guid ) ; return ! ! addon ; }
Provide core Store API to determine if a record exists.
Provide core Store API to determine if a record exists .