I want to override IsAvailable method in ProductExtensions class in my plugin, in order to add some extra controls but because of it's being a static class, I couldn't make it. Do you have any suggestion ?
But unless you want to change the core then you need to go up a level and override a method in ProductController that calls IsAvailable nopCommerce_3.90_Source\Presentation\Nop.Web\Controllers\ProductController.cs Then either create you own IsAvailable or use the current one in conjunction with your extra controls