Function tikv::storage::txn::tests::must_acquire_pessimistic_lock_impl

pub fn must_acquire_pessimistic_lock_impl<E: Engine>(
    engine: &E, 
    key: &[u8], 
    pk: &[u8], 
    start_ts: impl Into<TimeStamp>, 
    should_not_exist: bool, 
    lock_ttl: u64, 
    for_update_ts: impl Into<TimeStamp>, 
    need_value: bool, 
    min_commit_ts: impl Into<TimeStamp>
) -> Option<Value>