| Code | Level | Rule | Explanation | | --- | --- | --- | --- | | --- | --- | - Class | --- | | VXXX | MAJOR | -- Added | The method doesn't have an implementation anymore. It must be implemented by all class that inherit from it. | | VXXX | MINOR | -- Removed | The method may have an implementation. Classes that inherit from it may not need to implement it anymore. | | --- | --- | - Trait | --- | | VXXX | MAJOR | -- Added | The method doesn't have an implementation anymore. It must be implemented by all class that inherit from it. | | VXXX | MINOR | -- Removed | The method may have an implementation. Classes that inherit from it may not need to implement it anymore. |