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: batcher.go
    path of file: ./repos/rclone/lib/batcher
    
    the code of the file until where you have to start completion: // Package batcher implements a generic batcher.
//
// It uses two types:
//
//	Item - the thing to be batched
//	Result - the result from the batching
//
// And one function of type CommitBatchFn which is called to do the actual batching.
package batcher

import (
	"context"
	"errors"
	"fmt"
	"sync"
	"time"

	"github.com/rclone/rclone/fs"
	"github.com/rclone/rclone/fs/fserrors"
	"github.com/rclone/rclone/lib/atexit"
)

// Options for configuring the batcher
type Op
    
func (b *Batcher[Item, Result]) commitLoop(ctx context.Context) {
	var (
		requests  []request[Item, Result] // current batch of uncommitted Items
		idleTimer = time.NewTimer(b.opt.Timeout)
		commit    = func() {
			err := b.commitBatch(ctx, requests)
			if err != nil {
				fs.Errorf(b.f, "%s batch commit: failed to commit batch length %d: %v", b.opt.Mode, len(requests), err)
			}
			requests = nil
		}
	)
	defer b.wg.Done()
	defer idleTimer.Stop()
	idleTimer.Stop()

outer:
	for {
		select {
		case req := <-b.in:
			if req.quit {
				break outer
			}
			requests = append(requests, req)
			idleTimer.Stop()
			if len(requests) >= b.opt.Size {
				commit()
			} else {
				idleTimer.Reset(b.opt.Timeout)
			}
		case <-idleTimer.C:
			if len(requests) > 0 {
				fs.Debugf(b.f, "Batch idle for %v so committing", b.opt.Timeout)
				commit()
			}
		}

	}
	// commit any remaining items
	if len(requests) > 0 {
		commit()
	}
}