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: command_fs_mv.go
    path of file: ./repos/seaweedfs/weed/shell
    
    the code of the file until where you have to start completion: package shell

import (
	"context"
	"fmt"
	"io"

	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
	"github.com/seaweedfs/seaw
    
func (c *commandFsMv) Help() string {
	return `move or rename a file or a folder

	fs.mv  <source entry> <destination entry> 

	fs.mv /dir/file_name /dir2/filename2
	fs.mv /dir/file_name /dir2

	fs.mv /dir/dir2 /dir3/dir4/
	fs.mv /dir/dir2 /dir3/new_dir

`
}