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create code fences with backticks ` or tildes ~
```
like so
``` -
add language identifier to highlight code
```python
def function(foo):
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``` - put returns between paragraphs
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Authorinstance can only exist if the author exists, then you can also ensure that anAuthorIdcan only exist if the author exists, or am I missing something? It is of course up to the internals of the repository or aggregate root or whatever to maintain the consistency of the underlying data. Sometimes, the best solution is to relax consistency requirements a bit.