app/app.go
func (app *App) validate() error {
	err := app.validatePool()
	if err != nil {
		return err
	}
	return app.validatePlan()
}
func (app *App) validate() error {
	err := app.validatePool()
	if err != nil {
		return err
	}
	return app.validatePlan()
}
// validate checks app pool and plan