code: func (m Map) Delete(prefix string) {
  	for k, _ := range m {
  		match := k == prefix
  		if !match {
  			if !strings.HasPrefix(k, prefix) {
  				continue
  			}
  
  			if k[len(prefix):len(prefix)+1] != "." {
  				continue
  			}
  		}
  
  		delete(m, k)
  	}
  }
docs: // Delete deletes a key out of the map with the given prefix.