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<?php

    namespace Inteve\FeedGenerator;


    abstract class Feed implements IFeed
    {
        /** @var array|\Traversable */
        protected $items = array();


        /**
         * @param  array|\Traversable
         */
        public function setItems($items)
        {
            if (!is_array($items) && !($items instanceof \Traversable)) {
                throw new InvalidArgumentException('Items must be array or \\Traversable, ' . gettype($items) . ' given.');
            }
            $this->items = $items;
            return $this;
        }
    }