keys(product): title, body, _layout_builder, variations, field_product_image, field_product_category, field_product_code, field_svoystva_tovara, 

keys(elements): #commerce_product, #view_mode, #cache, #theme, #weight, #pre_render, #entity_type, #attached, #contextual_links, #title, title, body, _layout_builder, variations, field_product_image, field_product_category, field_product_code, field_svoystva_tovara, #sorted, #children, #render_children, 

has product_entity? yes