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: ftpfs.go
    path of file: ./repos/arozos/src/mod/filesystem/abstractions/ftpfs
    
    the code of the file until where you have to start completion: package ftpfs

import (
	"bytes"
	"io"
	"io/fs"
	"log"
	"math/rand"
	"os"
	"path/filepath"
	"strings"
	"time"

	"github.com/jlaffaye/ftp"
	"imuslab.com/arozos/mod/filesystem/arozfs"
)

/*
	FTPFS.go

	FTP Server as File System Abstraction

*/

type FTPFSAbstraction struct {
	uuid      strin
    
func (l FTPFSAbstraction) Walk(root string, walkFn filepath.WalkFunc) error {
	root = filterFilepath(root)
	log.Println("[FTP FS] Walking a root on FTP is extremely slow. Please consider rewritting this function. Scanning: " + root)
	c, err := l.makeConn()
	if err != nil {
		return err
	}
	defer c.Quit()
	rootStat, err := c.GetEntry(root)
	rootStatInfo := NewFileInfoFromEntry(rootStat, c, root)
	err = walkFn(root, rootStatInfo, err)
	if err != nil {
		return err
	}
	return l.walk(root, walkFn)
}