* notmuch_directory_set_mtime, etc.) will work unless the function
* notmuch_database_upgrade is called successfully first. */
func (self *Database) NeedsUpgrade() bool {
* notmuch_directory_set_mtime, etc.) will work unless the function
* notmuch_database_upgrade is called successfully first. */
func (self *Database) NeedsUpgrade() bool {