}

    // New configuration keys for Entra ID
    /** Configuration key for Entra ID state time-to-live. */
    protected static final String ENTRAID_STATE_TTL = "entraid.state.ttl";

    /** Configuration key for Entra ID authority URL. */
    protected static final String ENTRAID_AUTHORITY = "entraid.authority";

    /** Configuration key for Entra ID tenant ID. */

   *
   * static final ListMultimap<Character, String> FIRST_LETTER_MULTIMAP;
   *
   * static {
   *     FIRST_LETTER_MULTIMAP = MultimapBuilder.treeKeys().arrayListValues().build();
   *     FIRST_LETTER_MULTIMAP.put('b', "anana");
   *     FIRST_LETTER_MULTIMAP.put('a', "pple");
   *     FIRST_LETTER_MULTIMAP.put('a', "sparagus");
   *     FIRST_LETTER_MULTIMAP.put('c', "arrot");
   *     FIRST_LETTER_MULTIMAP.put('c', "herry");
   * }