Removed duplicate import statement in example in documentation.
@@ -1354,9 +1354,6 @@ have 'units', and so upcasting from version 1 to version 2 involves defining
.. code:: python
- from eventsourcing.domain.model.aggregate import BaseAggregateRoot
-
-
class ExampleAggregate(BaseAggregateRoot):
__class_version__ = 2
