You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: fileperms.go
    path of file: ./repos/gosec/rules
    
    the code of the file until where you have to start completion: // (c) Copyright 2016 Hewlett Packard Enterprise Development LP
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use 
    
func NewOsCreatePerms(id string, conf gosec.Config) (gosec.Rule, []ast.Node) {
	mode := getConfiguredMode(conf, id, 0o666)
	return &osCreatePermissions{
		mode:  mode,
		pkgs:  []string{"os"},
		calls: []string{"Create"},
		MetaData: issue.MetaData{
			ID:         id,
			Severity:   issue.Medium,
			Confidence: issue.High,
			What: fmt.Sprintf("Expect file permissions to be %#o or less but os.Create used with default permissions %#o",
				mode, defaultOsCreateMode),
		},
	}, []ast.Node{(*ast.CallExpr)(nil)}
}