[
MyTestClass1(x=1),
MyTestClass1(x=1, y=2, z=3),
MyTestClass2(x=10),
MyTestClass2(x=10, y=20, z=30),
MyTestClass3(x=1),
MyTestClass3(x=1, y=2, z=3),
YAMLObject1(my_parameter='foo', my_another_parameter=[1,2,3])
]