golden hour

/home/doctorbruno/public_html/kumaniko.com/wp-content/plugins/jetpack/modules/sitemaps

File/Folder	Size	Actions
sitemap-buffer-fallback.php	3.42 KB
sitemap-buffer-image-fallback.php	1.7 KB
sitemap-buffer-image.php	1.93 KB
sitemap-buffer-master-fallback.php	1.07 KB
sitemap-buffer-master.php	1.26 KB
sitemap-buffer-news-fallback.php	1.72 KB
sitemap-buffer-news.php	1.95 KB
sitemap-buffer-page-fallback.php	1.62 KB
sitemap-buffer-page.php	1.86 KB
sitemap-buffer-video-fallback.php	1.71 KB
sitemap-buffer-video.php	1.93 KB
sitemap-buffer.php	7.91 KB
sitemap-builder.php	38.87 KB
sitemap-constants.php	5.66 KB
sitemap-finder.php	2.89 KB
sitemap-librarian.php	10.9 KB
sitemap-logger.php	2.29 KB
sitemap-state.php	4.17 KB
sitemap-stylist.php	19.85 KB
sitemaps.php	17.8 KB

Edit: sitemap-buffer-image.php

<?php
/**
 * Sitemaps (per the protocol) are essentially lists of XML fragments;
 * lists which are subject to size constraints. The Jetpack_Sitemap_Buffer_Image
 * extends the Jetpack_Sitemap_Buffer class to represent the single image sitemap
 * buffer.
 *
 * @since 5.3.0
 * @package automattic/jetpack
 */

/**
 * A buffer for constructing sitemap image xml files.
 *
 * @since 5.3.0
 */
class Jetpack_Sitemap_Buffer_Image extends Jetpack_Sitemap_Buffer {

public function __construct( $item_limit, $byte_limit, $time = '1970-01-01 00:00:00' ) {
		parent::__construct( $item_limit, $byte_limit, $time );

$this->doc->appendChild(
			$this->doc->createComment( "generator='jetpack-" . JETPACK__VERSION . "'" )
		);

$this->doc->appendChild(
			$this->doc->createProcessingInstruction(
				'xml-stylesheet',
				'type="text/xsl" href="' . $this->finder->construct_sitemap_url( 'image-sitemap.xsl' ) . '"'
			)
		);
	}

protected function get_root_element() {
		if ( ! isset( $this->root ) ) {

/**
			 * Filter the XML namespaces included in image sitemaps.
			 *
			 * @module sitemaps
			 *
			 * @since 4.8.0
			 *
			 * @param array $namespaces Associative array with namespaces and namespace URIs.
			 */
			$namespaces = apply_filters(
				'jetpack_sitemap_image_ns',
				array(
					'xmlns:xsi'          => 'http://www.w3.org/2001/XMLSchema-instance',
					'xsi:schemaLocation' => 'http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd',
					'xmlns'              => 'http://www.sitemaps.org/schemas/sitemap/0.9',
					'xmlns:image'        => 'http://www.google.com/schemas/sitemap-image/1.1',
				)
			);

$this->root = $this->doc->createElement( 'urlset' );

foreach ( $namespaces as $name => $value ) {
				$this->root->setAttribute( $name, $value );
			}

$this->doc->appendChild( $this->root );
			$this->byte_capacity -= strlen( $this->doc->saveXML( $this->root ) );
		}

return $this->root;
	}
}