40 columns                              |
>>>
class SomeClass extends BaseClass implements Interface {}
<<<
class SomeClass extends BaseClass
    implements Interface {}
>>>
class AVeryLongSomeClass extends BaseClass implements I {}
<<<
class AVeryLongSomeClass
    extends BaseClass implements I {}
>>>
class AVeryLongSomeClass extends BaseClass implements Interface {}
<<<
class AVeryLongSomeClass
    extends BaseClass
    implements Interface {}
>>>
class SomeClass extends BaseClass with Mixin {}
<<<
class SomeClass extends BaseClass
    with Mixin {}
>>> class alias
class SomeClass = BaseClass with LongMixinName;
<<<
class SomeClass = BaseClass
    with LongMixinName;