var builder = PortalsJS.ApplicationBuilder("helloVLDB")

var _ = builder.workflows

  .source(builder.generators.fromArray(["Hello VLDB!"]).stream)

  .logger()

  .sink()

  .freeze()

var helloVLDB = builder.build()

var system = PortalsJS.System()

system.launch(helloVLDB)

system.stepUntilComplete()

​