add_theme_support( 'wc-product-gallery-zoom' );
add_theme_support( 'wc-product-gallery-lightbox' );
add_theme_support( 'wc-product-gallery-slider' );
info https://woocommerce.wordpress.com/2016/10/19/new-product-gallery-merged-in-to-core-for-2-7/
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