ude_users( $users );
		if ( empty( $users ) ) {
			$users = [];
		}

		$time = time();

		foreach ( $users as $user ) {

			$author_link = get_author_posts_url( $user->ID );

			if ( empty( $author_link ) ) {
				continue;
			}

			$mod = $time;

			if ( isset( $user->_yoast_wpseo_profile_updated ) ) {
				$mod = $user->_yoast_wpseo_profile_updated;
			}

			$url = [
				'loc' => $author_link,
				'mod' => date( DATE_W3C, $mod ),

				// Deprecated, kept for backwards data compat. R.
				'chf' => 'daily',
				'pri' => 1,
			];

			/** This filter is documented at inc/sitemaps/class-post-type-sitemap-provider.php */
			$url = apply_filters( 'wpseo_sitemap_entry', $url, 'user', $user );

			if ( ! empty( $url ) ) {
				$links[] = $url;
			}
		}

		return $links;
	}

	/**
	 * Update any users that don't have last profile update timestamp.
	 *
	 * @return int Count of users updated.
	 */
	protected function update_user_meta() {

		$user_criteria = [
			'who'        => 'authors',
			'meta_query' => [
				[
					'key'     => '_yoast_wpseo_profile_updated',
					'compare' => 'NOT EXISTS',
				],
			],
		];
		$users         = get_users( $user_criteria );

		$time = time();

		foreach ( $users as $user ) {
			update_user_meta( $user->ID, '_yoast_wpseo_profile_updated', $time );
		}

		return count( $users );
	}

	/**
	 * Wrap legacy filter to deduplicate calls.
	 *
	 * @param array $users Array of user objects to filter.
	 *
	 * @return array
	 */
	protected function exclude_users( $users ) {

		/**
		 * Filter the authors, included in XML sitemap.
		 *
		 * @param array $users Array of user objects to filter.
		 */
		return apply_filters( 'wpseo_sitemap_exclude_author', $users );
	}
}