public function __construct($name, $class, $localKey, $foreignKey, $collection, $condition = '', $order = null)
{
$this->name = $name;
$this->class = $class;
$this->localKey = $localKey;
$this->foreignKey = $foreignKey;
$this->collection = $collection;
$this->condition = $condition;
$this->order = $order;
}