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: main.go
    path of file: ./repos/gitkube/vendor/github.com/googleapis/gnostic/plugins/gnostic-analyze
    
    the code of the file until where you have to start completion: // Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you
    
func main() {
	env, err := plugins.NewEnvironment()
	env.RespondAndExitIfError(err)

	var stats *statistics.DocumentStatistics

	for _, model := range env.Request.Models {
		switch model.TypeUrl {
		case "openapi.v2.Document":
			documentv2 := &openapiv2.Document{}
			err = proto.Unmarshal(model.Value, documentv2)
			if err == nil {
				// Analyze the API document.
				stats = statistics.NewDocumentStatistics(env.Request.SourceName, documentv2)
			}
		case "openapi.v3.Document":
			documentv3 := &openapiv3.Document{}
			err = proto.Unmarshal(model.Value, documentv3)
			if err == nil {
				// Analyze the API document.
				stats = statistics.NewDocumentStatisticsV3(env.Request.SourceName, documentv3)
			}
		}
	}

	if stats != nil {
		// Return the analysis results with an appropriate filename.
		// Results are in files named "summary.json" in the same relative
		// locations as the description source files.
		file := &plugins.File{}
		file.Name = strings.Replace(stats.Name, path.Base(stats.Name), "summary.json", -1)
		file.Data, err = json.MarshalIndent(stats, "", "  ")
		file.Data = append(file.Data, []byte("\n")...)
		env.RespondAndExitIfError(err)
		env.Response.Files = append(env.Response.Files, file)
	}

	env.RespondAndExit()
}