unable to import `fhir.model`

[themantalope]

Hi,

When trying to import from the model module, I get the following error:

>>> from fhir.model import Patient
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'fhir.model'

I noticed the fhir is actually a symlink to fhir4. Perhaps that is the issue?