Function tikv::storage::txn::actions::check_txn_status::check_txn_status_lock_exists

pub fn check_txn_status_lock_exists(
    txn: &mut MvccTxn, 
    reader: &mut SnapshotReader<impl Snapshot>, 
    primary_key: Key, 
    lock: Lock, 
    current_ts: TimeStamp, 
    caller_start_ts: TimeStamp, 
    force_sync_commit: bool, 
    resolving_pessimistic_lock: bool
) -> Result<(TxnStatus, Option<ReleasedLock>)>