code: public static String getClientConfigurationUri(final OidcRegisteredService registeredService,
                                                     final String serverPrefix) throws URISyntaxException {
          return new URIBuilder(serverPrefix
              .concat('/' + OidcConstants.BASE_OIDC_URL + '/' + OidcConstants.CLIENT_CONFIGURATION_URL))
              .addParameter(OidcConstants.CLIENT_REGISTRATION_CLIENT_ID, registeredService.getClientId())
              .build()
              .toString();
      }
docs: Gets client configuration uri.
  
  @param registeredService the registered service
  @param serverPrefix      the server prefix
  @return the client configuration uri
  @throws URISyntaxException the uri syntax exception