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: render.go
    path of file: ./repos/cointop/pkg/termui
    
    the code of the file until where you have to start completion: // Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.

package termui

// Bufferer should be implemented by all renderable components.
type Bufferer interface {
	Buffer() Buffer
}

/*
// Init initializes termui library. This function should be called before any others.
// After initialization, the library must be finalized by 'Close' function.
func Init() error {
	if err := tm.Init(); err != nil {
		return err
	}

	sysEvtChs = make([]chan Event, 0)
	go hookTermboxEvt()

	renderJobs = make(chan []Bufferer)
	//renderLock = new(sync.RWMutex)

	Body = NewGrid()
	Body.X = 0
	Body.Y = 0
	Body.BgColor = ThemeAttr("bg")
	Body.Width = TermWidth()

	DefaultEvtStream.Init()
	DefaultEvtStream.Merge("termbox", NewSysEvtCh())
	DefaultEv
    
func render(bs ...Bufferer) {
	defer func() {
		if e := recover(); e != nil {
			Close()
			fmt.Fprintf(os.Stderr, "Captured a panic(value=%v) when rendering Bufferer. Exit termui and clean terminal...\nPrint stack trace:\n\n", e)
			//debug.PrintStack()
			gs, err := stack.ParseDump(bytes.NewReader(debug.Stack()), os.Stderr, false)
			if err != nil {
				debug.PrintStack()
				os.Exit(1)
			}
			buckets := stack.Aggregate(gs.Goroutines, stack.AnyValue)
			for _, bucket := range buckets {
				srcLen, pkgLen := 0, 0
				for _, line := range bucket.Signature.Stack.Calls {
					if l := len(line.SrcLine()); l > srcLen {
						srcLen = l
					}
					if l := len(line.Func.PkgName()); l > pkgLen {
						pkgLen = l
					}
				}
				extra := ""
				if s := bucket.SleepString(); s != "" {
					extra += " [" + s + "]"
				}
				if bucket.Locked {
					extra += " [locked]"
				}
				if c := bucket.CreatedByString(false); c != "" {
					extra += " [Created by " + c + "]"
				}
				io.WriteString(os.Stdout, fmt.Sprintf("%d: %s%s\n", len(bucket.IDs), bucket.State, extra))

				for _, line := range bucket.Stack.Calls {
					io.WriteString(os.Stdout, fmt.Sprintf(
						"    %-*s %-*s %s(%s)\n",
						pkgLen, line.Func.PkgName(), srcLen, line.SrcLine(),
						line.Func.Name(), &line.Args))
				}
				if bucket.Stack.Elided {
					io.WriteString(os.Stdout, "    (...)\n")
				}
			}
			os.Exit(1)
		}
	}()
	for _, b := range bs {

		buf := b.Buffer()
		// set cels in buf
		for p, c := range buf.CellMap {
			if p.In(buf.Area) {

				tm.SetCell(p.X, p.Y, c.Ch, toTmAttr(c.Fg), toTmAttr(c.Bg))

			}
		}

	}

	renderLock.Lock()
	// render
	tm.Flush()
	renderLock.Unlock()
}