--- /dev/null
+<?php
+
+namespace Drupal\aggregator;
+
+use Drupal\Core\Entity\ContentEntityInterface;
+
+/**
+ * Provides an interface defining an aggregator item entity.
+ */
+interface ItemInterface extends ContentEntityInterface {
+
+ /**
+ * Returns the feed id of aggregator item.
+ *
+ * @return int
+ * The feed id.
+ */
+ public function getFeedId();
+
+ /**
+ * Sets the feed id of aggregator item.
+ *
+ * @param int $fid
+ * The feed id.
+ *
+ * @return \Drupal\aggregator\ItemInterface
+ * The called feed item entity.
+ */
+ public function setFeedId($fid);
+
+ /**
+ * Returns the title of the feed item.
+ *
+ * @return string
+ * The title of the feed item.
+ */
+ public function getTitle();
+
+ /**
+ * Sets the title of the feed item.
+ *
+ * @param string $title
+ * The title of the feed item.
+ *
+ * @return \Drupal\aggregator\ItemInterface
+ * The called feed item entity.
+ */
+ public function setTitle($title);
+
+ /**
+ * Returns the link to the feed item.
+ *
+ * @return string
+ * The link to the feed item.
+ */
+ public function getLink();
+
+ /**
+ * Sets the link to the feed item.
+ *
+ * @param string $link
+ * The link to the feed item.
+ *
+ * @return \Drupal\aggregator\ItemInterface
+ * The called feed item entity.
+ */
+ public function setLink($link);
+
+ /**
+ * Returns the author of the feed item.
+ *
+ * @return string
+ * The author of the feed item.
+ */
+ public function getAuthor();
+
+ /**
+ * Sets the author of the feed item.
+ *
+ * @param string $author
+ * The author name of the feed item.
+ *
+ * @return \Drupal\aggregator\ItemInterface
+ * The called feed item entity.
+ */
+ public function setAuthor($author);
+
+ /**
+ * Returns the body of the feed item.
+ *
+ * @return string
+ * The body of the feed item.
+ */
+ public function getDescription();
+
+ /**
+ * Sets the body of the feed item.
+ *
+ * @param string $description
+ * The body of the feed item.
+ *
+ * @return \Drupal\aggregator\ItemInterface
+ * The called feed item entity.
+ */
+ public function setDescription($description);
+
+ /**
+ * Returns the posted date of the feed item, as a Unix timestamp.
+ *
+ * @return int
+ * The posted date of the feed item, as a Unix timestamp.
+ */
+ public function getPostedTime();
+
+ /**
+ * Sets the posted date of the feed item, as a Unix timestamp.
+ *
+ * @param int $timestamp
+ * The posted date of the feed item, as a Unix timestamp.
+ *
+ * @return \Drupal\aggregator\ItemInterface
+ * The called feed item entity.
+ */
+ public function setPostedTime($timestamp);
+
+ /**
+ * Returns the unique identifier for the feed item.
+ *
+ * @return string
+ * The unique identifier for the feed item.
+ */
+ public function getGuid();
+
+ /**
+ * Sets the unique identifier for the feed item.
+ *
+ * @param string $guid
+ * The unique identifier for the feed item.
+ *
+ * @return \Drupal\aggregator\ItemInterface
+ * The called feed item entity.
+ */
+ public function setGuid($guid);
+
+}