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: adapter.go
    path of file: ./repos/moby/daemon/logger
    
    the code of the file until where you have to start completion: package logger // import "github.com/docker/docker/daemon/logger"

import (
	"context"
	"io"
	"os"
	"path/filepath"
	"sync"
	"time"

	"github.com/containerd/log"
	"github.com/docker/docker/api/types/plugins/logdriver"
	"github.com/docker/docker/pkg/plugingetter"
	"github.com/pkg/errors"
)

// pluginAdapter takes a plugin and implements the Logger interface for logger
// instance
    
func (a *pluginAdapter) Close() error {
	a.mu.Lock()
	defer a.mu.Unlock()

	if err := a.plugin.StopLogging(filepath.Join("/", "run", "docker", "logging", a.id)); err != nil {
		return err
	}

	if err := a.stream.Close(); err != nil {
		log.G(context.TODO()).WithError(err).Error("error closing plugin fifo")
	}
	if err := os.Remove(a.fifoPath); err != nil && !os.IsNotExist(err) {
		log.G(context.TODO()).WithError(err).Error("error cleaning up plugin fifo")
	}

	// may be nil, especially for unit tests
	if pluginGetter != nil {
		pluginGetter.Get(a.Name(), extName, plugingetter.Release)
	}
	return nil
}