Cosmos Dev Series: Cosmos-SDK-based Blockchain Upgrade - SimApp setup upgrade handler

app.go

package app // app.go

func NewSimApp(...) *SimApp {

    // setupUpgradeHandlers should be called before `LoadLatestVersion()`
    // because StoreLoad is sealed after that
    app.setupUpgradeHandlers(configurator, app.BankKeeper)
    
    if loadLatest {
        if err := app.LoadLatestVersion(); err != nil {
            tmos.Exit(err.Error())
        }
    }
    ...
    return app
}