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   1 # void pq\Transaction::importSnapshotAsync(string $snapshot_id)
   2
   3 [Asynchronously](pq/Connection/: Asynchronous Usage) import a snapshot from another transaction to synchronize with.
   4 See pq\Transaction::importSnapshot().
   5
   6 > ***NOTE:***
   7   The transaction must have an isolation level of at least pq\Transaction::REPEATABLE_READ.
   8
   9 ## Params:
  10
  11 * string $snapshot_id
  12   The snapshot identifier obtained by exporting a snapshot from a transaction.
  13
  14 ## Throws:
  15
  16 * pq\Exception\InvalidArgumentException
  17 * pq\Exception\BadMethodCallException
  18 * pq\Exception\RuntimeException