code: public InputStream executeWithoutAccessCheck()
          throws EFapsException
      {
          InputStream ret = null;
          executeEvents(EventType.CHECKOUT_PRE);
          if (!executeEvents(EventType.CHECKOUT_OVERRIDE)) {
              ret = this.executeWithoutTrigger();
          }
          executeEvents(EventType.CHECKOUT_POST);
          return ret;
      }
docs: Executes the checkout without an access check (but with triggers) and
  returns an input streams of the checked in file. The returned input
  stream must be closed, because the returned inputs stream also commit
  the store resource. Otherwise the transaction is rolled back!
  <ol>
  <li>executes the pre checkout trigger (if exists)</li>
  <li>executes the checkout trigger (if exists)</li>
  <li>executes if no checkout trigger exists or the checkout trigger is
  not executed the update ({@see #executeWithoutTrigger})</li>
  <li>executes the post checkout trigger (if exists)</li>
  </ol>
  
  @throws EFapsException if checkout action fails
  @return input stream containing the file