docs: @Override
      @FFDCIgnore(Exception.class)
      public final byte[] getBytes() throws InvalidTokenException, TokenExpiredException {
          if (encryptedBytes == null) {
              try {
                  sign();
                  encrypt();
              } catch (Exception e) {
                  throw new com.ibm.websphere.security.auth.InvalidTokenException(e.getMessage(), e);
              }
          }
          return encryptedBytes.clone();
      }