code: func getOverrideChain(controllerName, action string) []Filter {
  	if newChain, ok := filterOverrides[action]; ok {
  		return newChain
  	}
  	if newChain, ok := filterOverrides[controllerName]; ok {
  		return newChain
  	}
  	return nil
  }
docs: // getOverrideChain retrieves the overrides for the action that is set