pub unsafe extern "C-unwind" fn CFPlugInInstanceCreateWithInstanceDataSize(
allocator: Option<&CFAllocator>,
instance_data_size: CFIndex,
deallocate_instance_function: CFPlugInInstanceDeallocateInstanceDataFunction,
factory_name: Option<&CFString>,
get_interface_function: CFPlugInInstanceGetInterfaceFunction,
) -> Option<CFRetained<CFPlugInInstance>>Available on crate features
CFBase and CFPlugIn only.