code: func (h *Histogram) FullReset() {
  	if h.useLocks {
  		h.mutex.Lock()
  		defer h.mutex.Unlock()
  	}
  
  	h.allocd = defaultHistSize
  	h.bvs = make([]bin, defaultHistSize)
  	h.used = 0
  	h.lookup = [256][]uint16{}
  }
docs: // FullReset resets a histogram to default empty values.