[BUG][rust-axum] Generated Server fails to supply correct number of Generic Arguments in routing

[Chrystalkey]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

When Generating a spec in openapi-generator-cli version 7.12.0, The generator rust-axum fails to build a compiling module due to supplying the wrong number of generic arguments to the routing functions in src/server/mod.rs.
Such as:

.route("/api/v1/auth",
            delete(auth_delete::<I, A, E, C>).delete(auth_delete::<I, A, E>).post(auth_post::<I, A, E, C>).post(auth_post::<I, A, E>)
        )

Should be

.route("/api/v1/auth",
            delete(auth_delete::<I, A, E, C>).delete(auth_delete::<I, A, E, C>).post(auth_post::<I, A, E, C>).post(auth_post::<I, A, E>)
        )

openapi-generator version

7.12.0
rustc version 1.85

OpenAPI declaration file content or url

https://raw.githubusercontent.com/Chrystalkey/landtagszusammenfasser/refs/tags/rust-axum-body-wrapped/docs/specs/openapi.yml

Generation Details

java -jar "./oapi-generator/openapi-generator-cli.jar" generate -g rust-axum -i "$(Get-Location)/oapi-generator/openapi.yml" -o "$(Get-Location)/oapicode"
on linux replace with $(pwd)

Steps to reproduce

curl https://raw.githubusercontent.com/OpenAPITools/openapi-generator/master/bin/utils/openapi-generator-cli.sh > openapi-generator-cli
chmod u+x openapi-generator-cli
curl https://raw.githubusercontent.com/Chrystalkey/landtagszusammenfasser/refs/tags/rust-axum-body-wrapped/docs/specs/openapi.yml > openapi.yml
OPENAPI_GENERATOR_VERSION="7.12.0" ./$DIRECTORY/openapi-generator-cli generate -g rust-axum -i $DIRECTORY/openapi.yml -o $(pwd)/oapicode
cd oapicode
cargo build

Related issues/PRs

related/prestep to my issue tbd

Suggest a fix

This can be fixed by plainly grep-replacing <I, A, E> by <I, A, E, C>. With that the compilation of the module works.