[API Review] Remove Nullable field, UnresolvedReference and OpenApiReference from OpenAPISchema.

[RachitMalik12]

As title

[MaggieKimani1]

Closing this as completed.

[StefH]

@RachitMalik12 / @MaggieKimani1

What is the replacement property to get the OpenApiReference from the IOpenAPISchema ?

[MattParkerDev]

@StefH

What is the replacement property to get the OpenApiReference from the IOpenAPISchema ?

Like this :)

// IOpenApiSchema schema
if (schema is OpenApiSchemaReference referenceSchema)
{
    var reference = referenceSchema.Reference;
}