code: func GetNDC(dom, str, plural string, n int, ctx string, vars ...interface{}) string {
  	// Try to load default package Locale storage
  	loadStorage(false)
  
  	// Return Translation
  	globalConfig.RLock()
  	tr := globalConfig.storage.GetNDC(dom, str, plural, n, ctx, vars...)
  	globalConfig.RUnlock()
  
  	return tr
  }
docs: // GetNDC retrieves the (N)th plural form of Translation in the given domain for a given string.
  // Supports optional parameters (vars... interface{}) to be inserted on the formatted string using the fmt.Printf syntax.