pub type PFN_vkDebugReportCallbackEXT = Option<unsafe extern "system" fn(_: DebugReportFlagsEXT, _: DebugReportObjectTypeEXT, _: u64, _: usize, _: i32, _: *const c_char, _: *const c_char, _: *mut c_void) -> Bool32>;
https://www.khronos.org/registry/vulkan/specs/1.2-extensions/man/html/PFN_vkDebugReportCallbackEXT.html
