pub type PFN_vkGetDeviceGroupPresentCapabilitiesKHR = unsafe extern "system" fn(_device: Device, _device_group_present_capabilities: *mut DeviceGroupPresentCapabilitiesKHR) -> Result;pub type PFN_vkGetDeviceGroupPresentCapabilitiesKHR = unsafe extern "system" fn(_device: Device, _device_group_present_capabilities: *mut DeviceGroupPresentCapabilitiesKHR) -> Result;