[Bug]: Reference types not nullable with required modifier

[dsherret]

Describe the bug

Same steps as here: #2877 (comment)

Previously I could tell if reference types were nullable by looking at the required array, but now that's not possible.

Expected behavior

The otherRequiredNullable property should be nullable or there should be a way to disable the required modifier influcing the output. The purpose of the required modifier is to ensure that a property appears in an object initializer and projects piggybacking on it to create other meaning is very questionable (including annoyingly System.Text.Json).

Actual behavior

The otherRequiredNullable is still required:

Steps to reproduce

See #2877 (comment)

Exception(s) (if any)

No response

Swashbuckle.AspNetCore version

6.6.2

.NET Version

8.0.301

Anything else?

No response

[dsherret]

I had the wrong configuration. It needed:

c.UseAllOfToExtendReferenceSchemas();

...in addition to...

c.SupportNonNullableReferenceTypes();

(Kind of confusing)