pub type PFN_vkGetMemoryHostPointerPropertiesEXT = unsafe extern "system" fn(_device: Device, _handle_type: ExternalMemoryHandleTypeFlags, _host_pointer: *const c_void, _memory_host_pointer_properties: *mut MemoryHostPointerPropertiesEXT) -> Result;pub type PFN_vkGetMemoryHostPointerPropertiesEXT = unsafe extern "system" fn(_device: Device, _handle_type: ExternalMemoryHandleTypeFlags, _host_pointer: *const c_void, _memory_host_pointer_properties: *mut MemoryHostPointerPropertiesEXT) -> Result;