code: func (bu *Binutils) get() *binrep {
  	bu.mu.Lock()
  	r := bu.rep
  	if r == nil {
  		r = &binrep{}
  		initTools(r, "")
  		bu.rep = r
  	}
  	bu.mu.Unlock()
  	return r
  }
docs: // get returns the current representation for bu, initializing it if necessary.