GDS\Store::createEntity PHP Method

    public final function createEntity($arr_data = null)
    {
        $obj_entity = $this->obj_schema->createEntity();
        if (null !== $arr_data) {
            foreach ($arr_data as $str_property => $mix_value) {
                $obj_entity->__set($str_property, $mix_value);
            }
        }
        return $obj_entity;
    }

 /**
  * Produces a persistable GDS entity based on an aggregate root and an event.
  *
  * @param \Atrauzzi\PhpEventSourcing\AggregateRoot $aggregateRoot
  * @param object $event
  * @return \Atrauzzi\PhpEventSourcing\GoogleCloudDatastore\Event
  */
 private function createGdsEvent(AggregateRoot $aggregateRoot, $event)
 {
     $gdsEvent = $this->eventStore->createEntity(['created' => new DateTime(), 'type' => $this->getType($event), 'sequence' => $aggregateRoot->getLastSequence() + 1, 'aggregate_type' => $aggregateRoot->getType(), 'aggregate_id' => $aggregateRoot->getId(), 'discriminator_php' => get_class($event)]);
     // Extract all the POPO event's public properties and prefix them with `event_`.
     foreach (get_object_vars($event) as $property => $value) {
         $eventProperty = 'event_' . snake_case($property);
         $gdsEvent->{$eventProperty} = $value;
     }
     return $gdsEvent;
 }