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

import (
	"flag"
	"github.com/seaweedfs/seaweedfs/weed/pb"
	"github.com/seaweedfs/seaweedf
    
func (c *commandVolumeDeleteEmpty) Help() string {
	return `delete empty volumes from all volume servers

	volume.deleteEmpty -quietFor=24h -force

	This command deletes all empty volumes from one volume server.

`
}