The AllenSDK documentation for biophysical models references two example files:
A minimal example (simple_example.tgz) and a multicell example (multicell_example.tgz) are available to download as a starting point for your own projects.
(https://allensdk.readthedocs.io/en/latest/biophysical_models.html#examples)
However there are no links to simple_example.tgz and multicell_example.tgz, nor is it obvious where they can be downloaded from.