@return void|never
	 */
	public function setContext( $type, $fileName = 'sitemap', $indexName = 'root', $pageNumber = 0 ) {
		$indexesEnabled = aioseo()->options->sitemap->{$type}->indexes;

		aioseo()->sitemap->type          = $type;
		aioseo()->sitemap->filename      = $fileName;
		aioseo()->sitemap->indexes       = $indexesEnabled;
		aioseo()->sitemap->indexName     = $indexName;
		aioseo()->sitemap->linksPerIndex = aioseo()->options->sitemap->{$type}->linksPerIndex <= 50000 ? aioseo()->options->sitemap->{$type}->linksPerIndex : 50000;
		aioseo()->sitemap->pageNumber    = $pageNumber >= 1 ? $pageNumber - 1 : 0;
		aioseo()->sitemap->offset        = aioseo()->sitemap->linksPerIndex * aioseo()->sitemap->pageNumber;
		aioseo()->sitemap->isStatic      = false;
	}

	/**
	 * Redirects or alters the current request if:
	 * 1. The request includes our deprecated "aiosp_sitemap_path" URL param.
	 * 2. The request is for one of our sitemaps, but has a trailing slash.
	 * 3. The request is for the first index of a type, but has a page number.
	 * 4. The request is for a sitemap from WordPress Core/other plugin.
	 *
	 * @since 4.2.1
	 */
	protected function maybeRedirect() {
		if ( $this->checkedForRedirects ) {
			return;
		}

		$this->checkedForRedirects = true;

		// The request includes our deprecated "aiosp_sitemap_path" URL param.
		if ( preg_match( '/^\/\?aiosp_sitemap_path=root/i', $_SERVER['REQUEST_URI'] ) ) {
			wp_safe_redirect( home_url( 'sitemap.xml' ) );
			exit;
		}

		// The request is for one of our sitemaps, but has a trailing slash.
		if ( preg_match( '/\/(.*sitemap[0-9]*?\.xml(\.gz)?|.*sitemap(\.latest)?\.rss)\/$/i', $_SERVER['REQUEST_URI'] ) ) {
			wp_safe_redirect( home_url() . untrailingslashit( $_SERVER['REQUEST_URI'] ) );
			exit;
		}

		// The request is for the first index of a type, but has a page number.
		if ( preg_match( '/.*sitemap(0|1){1}?\.xml(\.gz)?$/i', $_SERVER['REQUEST_URI'] ) ) {
			$pathWithoutNumber = preg_replace( '/(.*sitemap)(0|1){1}?(\.xml(\.gz)?)$/i', '$1$3', $_SERVER['REQUEST_URI'] );
			wp_safe_redirect( home_url() . $pathWithoutNumber );
			exit;
		}

		// The request is for a sitemap from WordPress Core/other plugin, but the general sitemap is enabled.
		if ( ! aioseo()->options->sitemap->general->enable ) {
			return;
		}

		$sitemapPatterns = [
			'general' => [
				'sitemap\.txt',
				'sitemaps\.xml',
				'sitemap-xml\.xml',
				'sitemap[0-9]+\.xml',
				'sitemap(|[-_\/])?index[0-9]*\.xml',
				'wp-sitemap\.xml',
			],
			'rss'     => [
				'rss[0-9]*\.xml',
			]
		];

		$addonSitemapPatterns = aioseo()->addons->doAddonFunction( 'helpers', 'getOtherSitemapPatterns' );
		if ( ! empty( $addonSitemapPatterns ) ) {
			$sitemapPatterns = array_merge( $sitemapPatterns, $addonSitemapPatterns );
		}

		foreach ( $sitemapPatterns as $type => $patterns ) {
			foreach ( $patterns as $pattern ) {
				if ( preg_match( "/^$pattern$/i", $this->slug ) ) {
					wp_safe_redirect( aioseo()->sitemap->helpers->getUrl( $type ) );
					exit;
				}
			}
		}
	}
}