class TestNode(ModelNode): test = Label('Test') name = MergeKey('name')
class Test(ModelNode): test = Label('foo') sid = MergeKey('bar')
class Test(ModelNode): Test = Label() sid = MergeKey()
class Target(ModelNode): test = Label('TargetFoo') name = MergeKey('targetbar')
class Test(ModelNode): test = Label('Foo') name = MergeKey('bar')
class Test(ModelNode): test = Label('test') sid = MergeKey('sid')
class Target(ModelNode): test = Label('Target') name = MergeKey('name')
class TestNode(ModelNode): Test = Label() name = MergeKey()