Add

<?php

// bomendael

// legacy (oldskool) api
add_filter( 'woocommerce_api_product_response', function( $product_data, $product, $fields, $server ) {
  if($latin_name = get_field('latin_name', $product)) {
    $product_data['latin_name'] = $latin_name;
  }
  if($image_without_watermark = get_field('image_without_watermark', $product)) {
    $product_data['image_without_watermark'] = $image_without_watermark;
  }
  if(isset($product_data['featured_src'])) {
    $product_data['featured_src'] = wp_get_attachment_image_src( get_post_thumbnail_id( $product->get_id() ), 'suiteseven_shopping' );
  }
  return $product_data;
}, 4, 10);

// Add image size to rest API
add_filter("woocommerce_rest_prepare_product_object", function( $response, $post, $request ) {
  global $_wp_additional_image_sizes;
  if (empty($response->data)) {
      return $response;
  }
  foreach ($response->data['images'] as $key => $image) {
      $image_urls = [];
      foreach ($_wp_additional_image_sizes as $size => $value) {
          $image_info = wp_get_attachment_image_src($image['id'], $size);
          $response->data['images'][$key][$size] = $image_info[0];
      }
  }
  $response->data['meta_data'][] = [
    'id' => 9999,
    'key' => 'featured_image_url',
    'value' => wp_get_attachment_image_src( get_post_thumbnail_id( $post->get_id() ), 'suiteseven_shopping' )[0]
  ];
  $attachment_ids = $post->get_gallery_image_ids();
  $gallery = [];
  foreach($attachment_ids as $id) {
    $gallery[$id] = wp_get_attachment_image_src( $id , 'suiteseven_shopping' )[0];
  }
  if(!empty($gallery)) {
    $response->data['meta_data'][] = [
      'id' => 99999,
      'key' => 'featured_image_urls',
      'value' => array_values($gallery)
    ];
  }
  return $response;
}, 99999999999, 3);

// add image size to variations rest API
add_filter("woocommerce_rest_prepare_product_variation_object", function( $response, $variation, $request ) {
  $attachment_id = 0;
  if($variation->get_image_id()) {
    $attachment_id = $variation->get_image_id();
  } else {
    $attachment_id = get_post_thumbnail_id( $variation->get_parent_id() );
  }
  if($attachment_id) {
    $response->data['meta_data'][] = [
      'id' => 9999,
      'key' => 'featured_image_url',
      'value' => wp_get_attachment_image_src( $attachment_id , 'suiteseven_shopping' )[0]
    ];
    if($post_id = $variation->get_parent_id()) {
      $post = wc_get_product($post_id);
      $attachment_ids = $post->get_gallery_image_ids();
      $gallery = [];
      foreach($attachment_ids as $id) {
        $gallery[$id] = wp_get_attachment_image_src( $id , 'suiteseven_shopping' )[0];
      }
      $thumb_id = get_post_thumbnail_id( $post->get_id() );
      $gallery[$thumb_id] = wp_get_attachment_image_src( $thumb_id , 'suiteseven_shopping' )[0];
      if(isset($gallery[$attachment_id])) {
        unset($gallery[$attachment_id]); // we don't want the main one twice.
      }
      if(!empty($gallery)) {
        $response->data['meta_data'][] = [
          'id' => 99999,
          'key' => 'featured_image_urls',
          'value' => array_values($gallery)
        ];
      }
    }
  }
  return $response;
}, 99999999999, 3);