anchor.diff:  class Person {
       @Lazy(soft = true) List pets = ['Cat', 'Dog', 'Bird']
   }
  -
   
   def p = new Person()
   assert p.pets.contains('Cat')
  
positive.code:     Double latitude, longitude
  }
  
  
  def c1 = new Coordinates(latitude: 48.824068, longitude: 2.531733)
  def c2 = new Coordinates(48.824068, 2.531733)
  
  
  assert c1 == c2
  ------------------------------------------------------------------
  
negative.code:     String getName()
  }
  
  // provided by a third-party
  class JamesBondVehicle implements Vehicle {
      String getName() { "James Bond's vehicle" }
  }
  
  JamesBondVehicle.mixin DivingAbility, FlyingAbility
  
  assert new JamesBondVehicle().fly() ==
         "I'm the James Bond's vehicle and I fly!"
  