Imports github.com/edgexfoundry/app-functions-sdk-go/pkg/transforms github.com/edgexfoundry/app-functions-sdk-go/appcontext github.com/edgexfoundry/app-functions-sdk-go/appsdk github.com/edgexfoundry/go-mod-core-contracts/models Standard library imports image image/jpeg bytes errors fmt image/png os