code: func (l *Lambda) DeleteFunction(in *lambda.DeleteFunctionInput) (*lambda.DeleteFunctionOutput, error) {
  	if in.Qualifier == nil {
  		l.remove("function", *in.FunctionName, nil)
  	} else {
  		l.remove("function version", fmt.Sprintf("%s (version: %s)", *in.FunctionName, *in.Qualifier), nil)
  	}
  
  	return nil, nil
  }
docs: // DeleteFunction stub.