rollback() public method

public rollback ( array $args )
$args array
 /**
  * Roll back a transaction
  *
  * @param string $transactionId The transaction to roll back
  * @return void
  */
 public function rollback($transactionId)
 {
     $this->connection->rollback(['projectId' => $this->projectId, 'transaction' => $transactionId]);
 }