/// Note that the ultimate copy of the SocketDescriptor will have all function pointers the same as the original.
/// May be NULL if no action needs to be taken, the this_arg pointer will be copied into the new SocketDescriptor.
pub clone: Option<extern "C" fn (this_arg: *const c_void) -> *mut c_void>,
/// Note that the ultimate copy of the SocketDescriptor will have all function pointers the same as the original.
/// May be NULL if no action needs to be taken, the this_arg pointer will be copied into the new SocketDescriptor.
pub clone: Option<extern "C" fn (this_arg: *const c_void) -> *mut c_void>,