openapi_extensions.md: add a clarification for oneOf

This commit is contained in:
Alexey Rusakov 2021-06-22 17:46:24 +02:00
parent bb47f08ee7
commit c11991f9de

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@ -54,6 +54,8 @@ doesn't work, as in the following example:
properties:
...
```
This can only be used to define the type of named properties. In particular,
the current tooling does not support `oneOf` inside `additionalProperties`.
## OpenAPI 3's "2xx" format for response codes