throttle.go
func (t *throttle) Capacity() (c uint64) {
	t.mu.Lock()
	c = t.bucket.Capacity()
	t.mu.Unlock()

	return
}
func (t *throttle) Capacity() (c uint64) {
	t.mu.Lock()
	c = t.bucket.Capacity()
	t.mu.Unlock()

	return
}
func ( t * throttle ) Capacity ( ) ( c uint64 ) { t . mu . Lock ( ) c = t . bucket . Capacity ( ) t . mu . Unlock ( ) return }
// LOCKS_EXCLUDED(t.mu)
LOCKS_EXCLUDED ( t . mu )