>singular_name;
	}

	/**
	 * Retrieves the singular post type label.
	 *
	 * @param string $post_type Post type to retrieve label from.
	 *
	 * @return string The singular post type name.
	 */
	protected function get_post_type_label( $post_type ) {
		$post_type_object = get_post_type_object( $post_type );

		// If the post type of this post wasn't registered default back to post.
		if ( $post_type_object === null ) {
			$post_type_object = get_post_type_object( 'post' );
		}

		return $post_type_object->labels->singular_name;
	}

	/**
	 * Checks whether the given post status is visible or not.
	 *
	 * @param string $post_status The post status to check.
	 *
	 * @return bool Whether or not the post is visible.
	 */
	protected function check_visible_post_status( $post_status ) {
		$visible_post_statuses = [
			'publish',
			'static',
			'private',
		];

		return in_array( $post_status, $visible_post_statuses, true );
	}

	/**
	 * Returns the message around changed URLs.
	 *
	 * @param string $first_sentence The first sentence of the notification.
	 *
	 * @return string The full notification.
	 */
	protected function get_message( $first_sentence ) {
		return '<h2>' . __( 'Make sure you don\'t miss out on traffic!', 'wordpress-seo' ) . '</h2>'
			. '<p>'
			. $first_sentence
			. ' ' . __( 'Search engines and other websites can still send traffic to your deleted post.', 'wordpress-seo' )
			. ' ' . __( 'You should create a redirect to ensure your visitors do not get a 404 error when they click on the no longer working URL.', 'wordpress-seo' )
			/* translators: %s expands to Yoast SEO Premium */
			. ' ' . sprintf( __( 'With %s, you can easily create such redirects.', 'wordpress-seo' ), 'Yoast SEO Premium' )
			. '</p>'
			. '<p><a class="yoast-button-upsell" href="' . WPSEO_Shortlinker::get( 'https://yoa.st/1d0' ) . '" target="_blank">'
			/* translators: %s expands to Yoast SEO Premium */
			. sprintf( __( 'Get %s', 'wordpress-seo' ), 'Yoast SEO Premium' )
			. '<span class="screen-reader-text">' . __( '(Opens in a new browser tab)', 'wordpress-seo' ) . '</span>'
			. '<span aria-hidden="true" class="yoast-button-upsell__caret"></span>'
			. '</a></p>';
	}

	/**
	 * Adds a notification to be shown on the next page request since posts are updated in an ajax request.
	 *
	 * @param string $message The message to add to the notification.
	 *
	 * @return void
	 */
	protected function add_notification( $message ) {
		$notification = new Yoast_Notification(
			$message,
			[
				'type'           => 'notice-warning is-dismissible',
				'yoast_branding' => true,
			]
		);

		$notification_center = Yoast_Notification_Center::get();
		$notification_center->add_notification( $notification );
	}
}