/**
  * Update a Square Item Image for a WC Product
  *
  * @param WC_Product $wc_product
  * @param string     $square_item_id
  * @return bool Success.
  */
 public function update_product_image(WC_Product $wc_product, $square_item_id)
 {
     $image_id = get_post_thumbnail_id($wc_product->id);
     if (empty($image_id)) {
         WC_Square_Sync_Logger::log(sprintf('[WC -> Square] Update Product Image: No thumbnail ID for WC Product %d.', $wc_product->id));
         return true;
     }
     $mime_type = get_post_field('post_mime_type', $image_id, 'raw');
     $image_path = get_attached_file($image_id);
     $result = $this->connect->update_square_product_image($square_item_id, $mime_type, $image_path);
     if ($result && isset($result->id)) {
         WC_Square_Utils::update_wc_product_image_square_id($wc_product->id, $result->id);
         return true;
     } else {
         WC_Square_Sync_Logger::log(sprintf('[WC -> Square] Error updating Product Image for WC Product %d.', $wc_product->id));
         return false;
     }
 }