guide/blueprints/example_yaml/enricher-propagator.yaml

brooklyn.enrichers:
- type: org.apache.brooklyn.enricher.stock.Propagator
  brooklyn.config:
    enricher.producer: $brooklyn:entity("cluster")
- type: org.apache.brooklyn.enricher.stock.Propagator
  brooklyn.config:
    sensorMapping:
      $brooklyn:sensor("url"): $brooklyn:sensor("org.apache.brooklyn.core.entity.Attributes", "main.uri")