@Managed
interface Address {
    String getCity()
    void setCity(String city)
}

@Managed
interface Person {
    String getFirstName()
    void setFirstName(String n)

    String getLastName()
    void setLastName(String n)

    Address getAddress()
}

class PersonRules extends RuleSource {
    @Model
    void people(ModelMap<Person> people) {
    }
}

apply plugin: PersonRules

model {
    person {
        lastName = "Smith"
    }
    person {
        address {
            city = "Melbourne"
        }
    }
    person(Person) {
        firstName = "John"
    }
    barry(Person)
    tasks {
        hello(Task) {
            def p = $.person
            doLast {
                println "Hello $p.firstName $p.lastName!"
            }
        }
    }
}

model {
    people {
        john {
            lastName = "Smith"
        }
        john(Person) {
            firstName = "John"
        }
        all {
            println "configuring $it"
        }
        barry(Person) {
            firstName = "Barry"
            lastName = "Barry"
        }
    }
    tasks {
        listPeople(Task) {
            doLast {
                def p = $.people
                p.each {
                    println "Hello $it.firstName $it.lastName!"
                }
            }
        }
    }
}