Question - Should enums really generate with a default?

Why does an enum property get a default but other non-nullable types do not?

```
public Country? Country { get; set; }
public int Version { get; set; }
```

Will generate as

```
"country": {
"format": "int32",
"default": 1,
"enum": [
1,
2
],
"type": "integer"
},
"version": {
"format": "int32",
"type": "integer"
},
```

This resulted in a hard to detect issue once we generated an API client based on the swagger file since the client's model generated with the default specified so even if the API returned a null value the model would still have a value.

No file, test, or entry point is named. Start by locating the OpenAPI schema generation path for enum properties, then compare the generated schemas for the nullable Country enum and non-nullable Version property; done means determining whether the enum default is intentional and, if not, confirming it is absent from the schema.

Written by the indexing model from the issue text.