src/Transaction/MultiExec.php
private function assertClient(ClientInterface $client)
    {
        if ($client->getConnection() instanceof AggregateConnectionInterface) {
            throw new NotSupportedException(
                'Cannot initialize a MULTI/EXEC transaction over aggregate connections.'
            );
        }

        if (!$client->getCommandFactory()->supportsCommands(array('MULTI', 'EXEC', 'DISCARD'))) {
            throw new NotSupportedException(
                'MULTI, EXEC and DISCARD are not supported by the current command factory.'
            );
        }
    }
private function assertClient(ClientInterface $client)
    {
        if ($client->getConnection() instanceof AggregateConnectionInterface) {
            throw new NotSupportedException(
                'Cannot initialize a MULTI/EXEC transaction over aggregate connections.'
            );
        }

        if (!$client->getCommandFactory()->supportsCommands(array('MULTI', 'EXEC', 'DISCARD'))) {
            throw new NotSupportedException(
                'MULTI, EXEC and DISCARD are not supported by the current command factory.'
            );
        }
    }
Checks if the passed client instance satisfies the required conditions
needed to initialize the transaction object.

@param ClientInterface $client Client instance used by the transaction object.

@throws NotSupportedException