Get multi in PHP

I see in the PHP Client SDK 2.6 that I can get multiple values with one get

$results = $bucket->get(array("foo", "bar", "baz"));
foreach ($results as $docid => $metadoc) {
// Each document itself has a 'propname'
echo "Result for $docid\n";
echo "\n";

but in the PHP SDK 3.0 if I do the same thing I get the following error:
Fatal error: Uncaught TypeError: Argument 1 passed to Couchbase\Collection::get() must be of the type string, array given

How can I get multiple values from PHP SDK 3.0?