code: func (f *defaultFormats) ContainsName(name string) bool {
  	f.Lock()
  	defer f.Unlock()
  	nme := f.normalizeName(name)
  	for _, v := range f.data {
  		if v.Name == nme {
  			return true
  		}
  	}
  	return false
  }
docs: // ContainsName returns true if this registry contains the specified name