Neos\Flow\Persistence\QueryInterface::in PHP Method

Returns an "in" criterion used for matching objects against a query. It matches if the property's value is contained in the multivalued operand.

public in ( string $propertyName, mixed $operand ) : object
$propertyName	string	The name of the property to compare against
$operand	mixed	The value to compare with, multivalued
return	object

    public function in($propertyName, $operand);

QueryInterface