How to use PfnVkDebugUtilsMessengerCallbackEXT?

[Coraxsin]

Im not really understanding how i could make a callback function for VkDebugUtilsMessengerCreateInfoEXT ive looked at the vulkan helpers and it seems that there are some functions related to debug logging but I cant seem to use them in
VulkanHelpers.BuildDefaultDebugMessengerCreateInfo(PfnVkDebugUtilsMessengerCallbackEXT)