class Person {
  String firstName
  String lastName
 }

def person1 = new Person(firstName: 'Eddard', lastName: 'Stark')
assert "${person1.firstName} ${person1.lastName}" == "Eddard Stark"

def person2 = new Person()
person2.firstName = 'Tyrion'
person2.setLastName 'Lannister'
assert "${person2.getFirstName()} ${person2.getLastName()}" == "Tyrion Lannister"

​