WordPress at a glance
filter is not described

woocommerce_navigation_get_breadcrumbs filter-hook . WC 1.0

The navigation breadcrumbs for the current page.

Usage

add_filter( 'woocommerce_navigation_get_breadcrumbs', 'filter_function_name_2590', 10, 2 );
function filter_function_name_2590( $breadcrumbs, $current_page ){
	// filter...

	return $breadcrumbs;
}
$breadcrumbs(array)
Navigation pieces (breadcrumbs).
$current_page(array|true|false)
The connected page data or false if not identified.

Where the hook is called

PageController::get_breadcrumbs()
woocommerce_navigation_get_breadcrumbs
woocommerce/packages/woocommerce-admin/src/PageController.php 193
return apply_filters( 'woocommerce_navigation_get_breadcrumbs', $breadcrumbs, $current_page );
woocommerce/packages/woocommerce-admin/src/PageController.php 149
return apply_filters( 'woocommerce_navigation_get_breadcrumbs', array( '' ), $current_page );

Where in WP core the hook is used WooCommerce

woocommerce/packages/woocommerce-admin/includes/connect-existing-pages.php 111
add_filter( 'woocommerce_navigation_get_breadcrumbs', 'wc_admin_filter_core_page_breadcrumbs' );