code: @Override
      @FFDCIgnore(MpJwtProcessingException.class)
      public String getTrustStoreRef() {
          if (this.sslRefInfo == null) {
              MicroProfileJwtService service = mpJwtServiceRef.getService();
              if (service == null) {
                  if (tc.isDebugEnabled()) {
                      Tr.debug(tc, "MP JWT service is not available");
                  }
                  return null;
              }
              sslRefInfo = new SslRefInfoImpl(service.getSslSupport(), service.getKeyStoreServiceRef(), sslRef, trustAliasName);
          }
          try {
              return sslRefInfo.getTrustStoreName();
          } catch (MpJwtProcessingException e) {
              // We already logged the error
          }
          return null;
      }
docs: {@inheritDoc}