void listProperties (Object object, String name, int level=0) {
  print ("| " * level)
  level += 1
  print name

  if (object instanceof Map) {
    println "[:]"
    def map = object as Map

    map.keySet().sort().each { key ->
      listProperties(map[key], key, level)
    }
  } else if (object instanceof List) {
    println "[]"
    def list = object as List
    int index = 0

    list.each { element ->
      listProperties(element, ('[' + index++ + ']'), level)
    }
  } else {
    print ": "

    if (object instanceof Project) {
      print "object "
      object = object.name
    } else if (object instanceof Task) {
      print "task "
      object = object.name
    }

    println object
  }
}

tasks.register("brlttyListProperties") {
  group "help"
  description "Lists all of brltty's properties."

  doLast {
    listProperties(rootProject.brltty, "brltty")
  }
}