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: get.go
    path of file: ./repos/arvados/lib/cli
    
    the code of the file until where you have to start completion: // Copyright (C) The Arvados Authors. All rights reserved.
//
// SPDX-License-Identifier: Apache-2.0

package cli

import (
	"encoding/json"
	"fmt"
	"io"

	"git.arvados.org/arvados.git/lib/cmd"
	"git.arvados.org/arvados.git/sdk/go/arvados"
	"github.com/ghodss/yaml"
)

var Get cmd.Handler = getCmd{}

type getCmd struct{}

func (getCmd) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
	var er
    
func (getCmd) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
	var err error
	defer func() {
		if err != nil {
			fmt.Fprintf(stderr, "%s\n", err)
		}
	}()

	flags, opts := LegacyFlagSet()
	flags.SetOutput(stderr)
	err = flags.Parse(args)
	if err != nil {
		return cmd.EXIT_INVALIDARGUMENT
	}
	if len(flags.Args()) != 1 {
		fmt.Fprintf(stderr, "usage of %s:\n", prog)
		flags.PrintDefaults()
		return cmd.EXIT_INVALIDARGUMENT
	}
	if opts.Short {
		opts.Format = "uuid"
	}

	id := flags.Args()[0]
	client := arvados.NewClientFromEnv()
	path, err := client.PathForUUID("show", id)
	if err != nil {
		return 1
	}

	var obj map[string]interface{}
	err = client.RequestAndDecode(&obj, "GET", path, nil, nil)
	if err != nil {
		err = fmt.Errorf("GET %s: %s", path, err)
		return 1
	}
	if opts.Format == "yaml" {
		var buf []byte
		buf, err = yaml.Marshal(obj)
		if err == nil {
			_, err = stdout.Write(buf)
		}
	} else if opts.Format == "uuid" {
		fmt.Fprintln(stdout, obj["uuid"])
	} else {
		enc := json.NewEncoder(stdout)
		enc.SetIndent("", "  ")
		err = enc.Encode(obj)
	}
	if err != nil {
		err = fmt.Errorf("encoding: %s", err)
		return 1
	}
	return 0
}