@POST
 @AnonymousAllowed
 @Path("string/set")
 public Response setString(KeyValueHolder holder) {
   applicationProperties.setString(holder.key, holder.value);
   return Response.ok(null).build();
 }
 private void setLicenseExtenstionTimestamp(final long timestamp) {
   applicationProperties.setOption(APKeys.JIRA_CONFIRMED_INSTALL_WITH_OLD_LICENSE, true);
   applicationProperties.setString(
       APKeys.JIRA_CONFIRMED_INSTALL_WITH_OLD_LICENSE_TIMESTAMP, String.valueOf(timestamp));
 }