Posts->getManyByGuids( $guids );
		$wpPosts = $result->getOr( array() );

		if ( $result->isErr() ) {
			Logger::error( $result->error() );
		}

		$map = array();
		foreach ( $wpPosts as $wpPost ) {
			$map[ $wpPost->guid ] = $wpPost;
		}

		return apply_filters( 'wpra.importer.existingItemsMap', $map, $guids, $items );
	}
}