queue_bulk_v
status_t (*queue_bulk_v)(usb_pipe pipe,
queue_bulk_v, // queue_bulk_v
status = (*udi->usb_m->queue_bulk_v)(pipe, sg_data, sg_count, bulk_callback, udi);
result = gUSBModule->queue_bulk_v(
status_t result = gUSBModule->queue_bulk_v(fReadEndpoint,
status_t result = gUSBModule->queue_bulk_v(fWriteEndpoint,
result = gUSBModule->queue_bulk_v(fWriteEndpoint, vec, 2, _WriteCallback, this);
status = sUSB->queue_bulk_v(xfer->pipe, xfer->frames, xfer->nframes, usbd_callback, xfer);