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: endpoint_info_unix.go
    path of file: ./repos/docker-ce/components/engine/libnetwork
    
    the code of the file until where you have to start completion: //go:build !windows
// +build !windows

package libnetwork

import "fmt"

func (ep *endpoint) DriverInfo() (map[string]interface{}, error) {
	ep, err := ep.retrieveFromStore()
	if err != nil {
		return nil, err
	}

	if sb, ok := ep.getSandbox(); ok {
		if gwep := sb.getEndpointInGWNetwork(); gwep != nil && gwep.ID() != ep.ID() {
			return gwep.DriverInfo()
		}
	}

	n, err := ep.getNetworkFromStore()
	if err != nil {
		return nil, 
    
func (ep *endpoint) DriverInfo() (map[string]interface{}, error) {
	ep, err := ep.retrieveFromStore()
	if err != nil {
		return nil, err
	}

	if sb, ok := ep.getSandbox(); ok {
		if gwep := sb.getEndpointInGWNetwork(); gwep != nil && gwep.ID() != ep.ID() {
			return gwep.DriverInfo()
		}
	}

	n, err := ep.getNetworkFromStore()
	if err != nil {
		return nil, fmt.Errorf("could not find network in store for driver info: %v", err)
	}

	driver, err := n.driver(true)
	if err != nil {
		return nil, fmt.Errorf("failed to get driver info: %v", err)
	}

	return driver.EndpointOperInfo(n.ID(), ep.ID())
}