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: is.go
    path of file: ./repos/ko/vendor/github.com/docker/docker/errdefs
    
    the code of the file until where you have to start completion: package errdefs

import (
	"context"
	"errors"
)

type causer interface {
	Cause() error
}

type wrapErr interface {
	Unwrap() error
}

func getImplementer(err error) error {
	switch e := err.(type) {
	case
		ErrNotFound,
		ErrInvalidParameter,

    
func getImplementer(err error) error {
	switch e := err.(type) {
	case
		ErrNotFound,
		ErrInvalidParameter,
		ErrConflict,
		ErrUnauthorized,
		ErrUnavailable,
		ErrForbidden,
		ErrSystem,
		ErrNotModified,
		ErrNotImplemented,
		ErrCancelled,
		ErrDeadline,
		ErrDataLoss,
		ErrUnknown:
		return err
	case causer:
		return getImplementer(e.Cause())
	case wrapErr:
		return getImplementer(e.Unwrap())
	default:
		return err
	}
}