clientv3/concurrency/stm.go
func WithAbortContext(ctx context.Context) stmOption {
	return func(so *stmOptions) { so.ctx = ctx }
}
func WithAbortContext(ctx context.Context) stmOption {
	return func(so *stmOptions) { so.ctx = ctx }
}
// WithAbortContext specifies the context for permanently aborting the transaction.