code: func (f *Function) GetConfigQualifier(s string) (*lambda.GetFunctionOutput, error) {
  	f.Log.Debug("fetching config")
  	return f.Service.GetFunction(&lambda.GetFunctionInput{
  		FunctionName: &f.FunctionName,
  		Qualifier:    &s,
  	})
  }
docs: // GetConfigQualifier returns the function configuration for the given qualifier.