Function email::sync::pool::new

pub async fn new<L, R>(
    left_cache_builder: BackendBuilder<MaildirContextBuilder>,
    left_builder: BackendBuilder<L>,
    right_cache_builder: BackendBuilder<MaildirContextBuilder>,
    right_builder: BackendBuilder<R>,
    pool_size: Option<usize>,
    handler: Option<Arc<SyncEventHandler>>,
    dry_run: bool,
    folder_filter: Option<FolderSyncStrategy>
) -> Result<ThreadPool<SyncPoolContext<L::Context, R::Context>>>
where
    L: BackendContextBuilder + 'static,
    R: BackendContextBuilder + 'static,

Create a new thread pool dedicated to synchronization.