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: wallet.go
    path of file: ./repos/qt/internal/examples/showcases/wallet/wallet/model
    
    the code of the file until where you have to start completion: package model

import "github.com/therecipe/qt/core"

type Transaction struct {
	Status string
	Date   string
	Amount string
	Type   string
	Total  string
	ID     string
}

type WalletModel struct {
	core.QAbstractTableModel

	transactions []Transaction

	_ func() `constructor:"init"`

	_ func([
    
func (m *WalletModel) data(index *core.QModelIndex, role int) *core.QVariant {
	if role != int(core.Qt__DisplayRole) && role < int(core.Qt__UserRole) {
		return core.NewQVariant()
	}

	dbArray := m.transactions
	if index.Row() < 0 || index.Row() >= len(dbArray) {
		return core.NewQVariant()
	}

	dbItem := dbArray[index.Row()]

	switch {
	case role == int(core.Qt__UserRole)+1:
		return core.NewQVariant1(dbItem.Status)

	case role == int(core.Qt__UserRole)+2:
		return core.NewQVariant1(dbItem.Date)

	case role == int(core.Qt__UserRole)+3:
		return core.NewQVariant1(dbItem.Amount)

	case role == int(core.Qt__UserRole)+4:
		return core.NewQVariant1(dbItem.Type)

	case role == int(core.Qt__UserRole)+5:
		return core.NewQVariant1(dbItem.Total)

	case role == int(core.Qt__UserRole)+6:
		return core.NewQVariant1(dbItem.ID)
	}

	return core.NewQVariant()
}