[BUG] [Rust Server] Not support free-form object code generated issue.

[paladinzh]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• What's the version of OpenAPI Generator used?
• Have you search for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Bounty to sponsor the fix (example)

Description

Not support free-form object code generated

openapi-generator version

OpenAPI declaration file content or url

modules/openapi-generator/src/test/resources/3_0/rust-server/openapi-v3.yaml
get:
tags: [Repo, Info]
operationId: Get Repo\Info
responses:
"200":
description: OK
content:
application/json:
schema:
$ref: "#/components/schemas/RepoObject"

RepoObject:
type: object

Command line used for generation

bin/rust-server-petstore.sh

Steps to reproduce

Run the generated code openapi-v3/

Related issues/PRs

No

Suggest a fix

Allow generate free-form object.

[wing328]

You can use {{#isFreeFormObject}} .. {{/isFreeFormObject}} in the template

[AmateurECE]

You can use {{#isFreeFormObject}} .. {{/isFreeFormObject}} in the template

As of 6.3.0, this suggestion has no effect (presumably since #7373 was merged). The provided example in the problem statement appears to be a (quoting the source)

// 1. free form with no validation that is not allOf included in any composed schemas

It seems like this case is disallowed, or otherwise not implemented in DefaultGenerator.java:490. Apparently, however, this is a common enough practice that DMTF's Redfish specification contains 33 examples of this. I'm not sure why this PR was abandoned, but is the community still willing to entertain a PR to resolve this?