```python
Contains information about the current variables of a Space.

Args:
key (`str`):
Variable key. Example: `"MODEL_REPO_ID"`
value (`str`):
Variable value. Example: `"the_model_repo_id"`.
description (`str` or None):
Description of the variable. Example: `"Model Repo ID of the implemented model"`.
updatedAt (`datetime` or None):
datetime of the last update of the variable (if the variable has been updated at least once).
```