Constructs this object.
public function __construct($entity_type, $conjunction) {
$this->entityType = $entity_type;
$this->conjunction = $conjunction;
$this->condition = $this
->conditionGroupFactory($conjunction);
if ($this instanceof QueryAggregateInterface) {
$this->conditionAggregate = $this
->conditionAggregateGroupFactory($conjunction);
}
}