#[cfg(feature ="imap")]pubmodimap;useasync_trait::async_trait;usecrate::AnyResult;#[async_trait]pubtraitPurgeFolder: Send + Sync {/// Purge the given folder.
////// Manipulate with caution: all emails contained in the given
/// folder are definitely deleted.
async fnpurge_folder(&self, folder:&str)->AnyResult<()>;}