+ notmuch_indexopts_t *
+ notmuch_database_get_default_indexopts (notmuch_database_t *db);
+ notmuch_status_t
+ notmuch_indexopts_set_decrypt_policy (notmuch_indexopts_t *indexopts,
+ notmuch_decryption_policy_t decrypt_policy);
+ notmuch_decryption_policy_t
+ notmuch_indexopts_get_decrypt_policy (const notmuch_indexopts_t *indexopts);
+ void
+ notmuch_indexopts_destroy (notmuch_indexopts_t *options);