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: report.go
    path of file: ./repos/minikube/pkg/minikube/audit
    
    the code of the file until where you have to start completion: /*
Copyright 2020 The Kubernetes Authors All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS
    
func Report(lastNLines int) (*RawReport, error) {
	if lastNLines <= 0 {
		return nil, fmt.Errorf("last n lines must be 1 or greater")
	}
	if err := openAuditLog(); err != nil {
		return nil, err
	}
	defer closeAuditLog()
	var logs []string
	s := bufio.NewScanner(currentLogFile)
	for s.Scan() {
		// pop off the earliest line if already at desired log length
		if len(logs) == lastNLines {
			logs = logs[1:]
		}
		logs = append(logs, s.Text())
	}
	if err := s.Err(); err != nil {
		return nil, fmt.Errorf("failed to read from audit file: %v", err)
	}
	rows, err := logsToRows(logs)
	if err != nil {
		return nil, fmt.Errorf("failed to convert logs to rows: %v", err)
	}
	r := &RawReport{
		[]string{"Command", "Args", "Profile", "User", "Version", "Start Time", "End Time"},
		rows,
	}
	return r, nil
}