Review

class PassportApduService {
   /**
    * Sends a <code>SELECT FILE</code> command to the passport.
    * Secure messaging will be applied to the command and response
    * apdu.
    *
    * @param wrapper the secure messaging wrapper to use.
    * @param fid the file to select.
    */
   public void sendSelectFile(SecureMessagingWrapper wrapper, short fid)
         throws IOException {
      Apdu capdu = createSelectFileAPDU(fid);
      if (wrapper != null) {
         capdu.wrapWith(wrapper);
      }
      byte[] rapdu = sendAPDU(capdu);
      if (wrapper != null) {
         rapdu = wrapper.unwrap(rapdu, rapdu.length);
      }
   }

}