code: func InsertPriorityKeyToAlgorithmProviderMap(key string) {
  	schedulerFactoryMutex.Lock()
  	defer schedulerFactoryMutex.Unlock()
  
  	for _, provider := range algorithmProviderMap {
  		provider.PriorityFunctionKeys.Insert(key)
  	}
  	return
  }
docs: // InsertPriorityKeyToAlgorithmProviderMap inserts a priority function to all algorithmProviders which are in algorithmProviderMap.