Sokil\Mongo\Collection::__construct PHP Method

    public function __construct(Database $database, $collection, Definition $definition = null)
    {
        // define db
        $this->database = $database;
        // init mongo collection
        if ($collection instanceof \MongoCollection) {
            $this->collectionName = $collection->getName();
            $this->collection = $collection;
        } else {
            $this->collectionName = $collection;
        }
        // init definition
        $this->definition = $definition ? $definition : new Definition();
        if ($this->documentClass) {
            $this->definition->setOption('documentClass', $this->documentClass);
        }
        if ($this->versioning !== null) {
            $this->definition->setOption('versioning', $this->versioning);
        }
        if ($this->_index) {
            $this->definition->setOption('index', $this->_index);
        }
        if ($this->_queryExpressionClass) {
            $this->definition->setOption('expressionClass', $this->_queryExpressionClass);
        }
    }