class SampleConfigurableBlock < ConfigurableBlock
  def do_almost_nothing message
    output "out", @config.value_at("/return_value")
  end

  inputs ["do_almost_nothing"]
  outputs ["out"]

  # ConfigurableBlock methods:

  def schema
    res = DataSchema.new
    res.add_node "/return_value", true
    res
  end
end