WC_Product_Variation::get_valid_tax_classes()
Return valid tax classes. Adds ‘parent’ to the default list of valid tax classes.
Description Description
Return Return
(array) valid tax classes
Source Source
File: includes/class-wc-product-variation.php
protected function get_valid_tax_classes() {
$valid_classes = WC_Tax::get_tax_class_slugs();
$valid_classes[] = 'parent';
return $valid_classes;
}