class Rules extends RuleSource {
              @Model
              void mapThings(ModelMap<ModelMap<Thing>> things) {
              }
              @Model
              void setThings(ModelMap<ModelSet<Thing>> things) {
              }
              @Model
              void setStrings(ModelMap<Set<String>> strings) {
              }
            }

            apply type: Rules

            model {

        abstract ModelMap<NamedThingInterface> getMap()
    }

    @Managed
    static abstract class WritableSetProperty {
        abstract void setSet(ModelSet<NamedThingInterface> set)
        abstract ModelSet<NamedThingInterface> getSet()
    }

    def "map cannot be writable"() {
        when: extract WritableMapProperty
        then: def ex = thrown InvalidManagedTypeException

         ⤷ PersonRules#setFirstName(Person)
    + age
          | Type:   	int
          | Value:  	0
          | Creator: 	PersonRules#person(Person)
    + children
          | Type:   	org.gradle.model.ModelSet<Person>
          | Creator: 	PersonRules#person(Person)
    + employed
          | Type:   	boolean
          | Value:  	false
          | Creator: 	PersonRules#person(Person)
    + father

 * <p>
 * The use of {@link WeakClassSet} as the cache key, opposed to just {@link Class}, is because a type may be composed of types from different classloaders.
 * An example of this would be something like {@code ModelSet<SomeCustomUserType>}.
 * The class set abstraction effectively creates a key for all classes involved in a type.
 * The {@link WeakClassSet#isCollected()} method returns true when any of the classes involved have been collected.

				numUnits[k] = append(numUnits[k], numUnit...)
			}
		}
		s.NumLabel = numLabels
		s.NumUnit = numUnits
	}

	// Remove label marking samples from the base profiles, so it does not appear
	// as a nodelet in the graph view.
	prof.RemoveLabel("pprof::base")

	formatTag := func(v int64, key string) string {
		return measurement.ScaledLabel(v, key, o.OutputUnit)
	}

	gopt := &graph.Options{