28 pub struct Transfer {  struct
33     callback: Option<Box<dyn Fn(Transfer) + Send + Sync>>,  argument
41     weak_transfer: std::sync::Weak<Transfer>,
106     pub fn submit_transfer(&mut self, transfer: Transfer) -> Result<TransferHandle> {  in submit_transfer()
115         let raw_transfer = (&*rc_transfer) as *const Transfer as usize;  in submit_transfer()  constant
168             let rc_transfer: Arc<Transfer> =  in poll_transfers()
169                 unsafe { Arc::from_raw((*urb_ptr).usercontext as *const Transfer) };  in poll_transfers()  constant
329 impl Transfer {  implementation
345     ) -> Result<Transfer> {  in new()  argument
346         let mut transfer = Transfer {  in new()
377     pub fn new_control(buffer: Vec<u8>) -> Result<Transfer> {  in new_control()  argument
383     pub fn new_interrupt(endpoint: u8, buffer: Vec<u8>) -> Result<Transfer> {  in new_interrupt()  argument
388     pub fn new_bulk(endpoint: u8, buffer: Vec<u8>) -> Result<Transfer> {  in new_bulk()  argument
393     pub fn new_isochronous(endpoint: u8, buffer: Vec<u8>) -> Result<Transfer> {  in new_isochronous()  argument
419     pub fn set_callback<C: 'static + Fn(Transfer) + Send + Sync>(&mut self, cb: C) {  in set_callback()