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action is not described

woocommerce_breadcrumb action-hook . WC 1.0

WooCommerce Breadcrumb hook

Usage

add_action( 'woocommerce_breadcrumb', 'action_function_name_4421', 10, 2 );
function action_function_name_4421( $breadcrumbs, $args ){
	// action...
}
$breadcrumbs
-
$args
-

Where the hook is called

woocommerce_breadcrumb()
woocommerce_breadcrumb
woocommerce/includes/wc-template-functions.php 2293
do_action( 'woocommerce_breadcrumb', $breadcrumbs, $args );

Where in WP core the hook is used WooCommerce

woocommerce/includes/class-wc-structured-data.php 30
add_action( 'woocommerce_breadcrumb', array( $this, 'generate_breadcrumblist_data' ), 10 );