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: module.go
    path of file: ./repos/qt/internal/binding/parser
    
    the code of the file until where you have to start completion: package parser

import (
	"fmt"
	"strings"

	"github.com/therecipe/qt/internal/utils"
)

type Module struct {
	Namespace *Namespace `xml:"namespace"`
	Proje
    
func (m *Module) Prepare() error {
	if utils.QT_API_NUM(utils.QT_VERSION()) >= 5120 && m.Project == "QtQuickControls" {
		m.Project = "QtQuickControls2"
	}

	utils.Log.WithField("module", strings.TrimPrefix(m.Project, "Qt")).Debug("prepare")

	m.Namespace.Classes = append(m.Namespace.Classes, m.Namespace.Structs...)

	//register classes from namespace
	for _, c := range m.Namespace.Classes {
		c.register(m)
	}
	m.add()

	for _, f := range m.Namespace.Functions {
		if m.Project == "QtQml" && f.Name == "qjsEngine" {
			f.Fullname = "QJSEngine::qjsEngine"
			f.register(m.Project)
		}
		if m.Project != "QtCore" || !(strings.Contains(f.Name, "Environment") || strings.HasSuffix(f.Name, "env") || f.Name == "qVersion") {
			continue
		}
		f.Fullname = strings.Replace(strings.Replace(f.Fullname, "<", "", -1), ">", "", -1)
		f.Static = true
		if f.Name == "qEnvironmentVariable" && len(f.Parameters) == 2 {
			f.Overload = true
			f.OverloadNumber = "2"
		}
		if !strings.HasPrefix(f.Fullname, "QtGlobal") {
			f.Fullname = fmt.Sprintf("%v::%v", "QtGlobal", f.Name)
		}
		f.register(m.Project)
	}

	//register enums and functions from subnamespaces
	var snsExtraClasses []*Class
	for _, sns := range m.Namespace.SubNamespaces {
		for _, e := range sns.Enums {
			if !(e.Status == "active" || e.Status == "commendable") || !(e.Access == "public" || e.Access == "protected") ||
				strings.Contains(e.Fullname, "Private") || strings.Contains(e.Fullname, "Util") ||
				strings.Contains(e.Fullname, "nternal") || strings.ToLower(e.Name) == e.Name {
				continue
			}
			e.register(m.Project)
		}
		if m.Project != "QtSensors" && m.Project != "QtXmlPatterns" &&
			m.Project != "QtQml" && m.Project != "QtWidgets" && m.Project != "QtMacExtras" &&
			m.Project != "QtTestLib" && m.Project != "QtScript" && m.Project != "QtQuick" {
			for _, f := range sns.Functions {

				if !(f.Status == "active" || f.Status == "commendable") || !(f.Access == "public" || f.Access == "protected") ||
					strings.Contains(f.Fullname, "Private") || strings.Contains(f.Fullname, "Util") ||
					strings.Contains(f.Fullname, "nternal") || f.Name == "qDefaultSurfaceFormat" ||
					f.ClassName() == "QUnicodeTables" ||
					f.ClassName() == "QUtf8Functions" ||
					f.ClassName() == "QUnicodeTools" ||
					f.ClassName() == "HPack" ||
					f.ClassName() == "QHighDpi" ||
					f.ClassName() == "QPdf" ||
					f.ClassName() == "QPlatformGraphicsBufferHelper" ||
					f.ClassName() == "QIcu" ||
					strings.ToLower(f.ClassName()) == f.ClassName() {
					continue
				}

				if m.Project == "QtWebEngine" && f.Name != "initialize" {
					continue
				}

				f.Static = true
				f.register(m.Project)
				if c, ok := f.Class(); ok {
					if l := len(snsExtraClasses); l > 0 && snsExtraClasses[l-1].Name == c.Name {
						continue
					}
					snsExtraClasses = append(snsExtraClasses, c)
				}
			}
		}
	}

	//mutate classmap
	if utils.QT_GEN_QUICK_EXTRAS() {
		if m.Project == "QtQuickControls2" {
			for _, c := range append(SortedClassesForModule(m.Project, false), snsExtraClasses...) {
				if strings.HasPrefix(c.Name, "QQuick") && !strings.HasSuffix(c.Name, "Private") {
					c.Status = "active"
					c.Access = "public"
				}
			}
		}
	}
	m.remove()

	//mutate classes
	for _, c := range append(SortedClassesForModule(m.Project, false), snsExtraClasses...) {
		c.add()
		c.fix()
		c.remove()
	}

	//register derivations
	for _, c := range m.Namespace.Classes {
		c.derivation()
	}

	return nil
}