[BUG] [Rust Server] Generated code with yaml multi tag compile error.

Created by: 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?
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Description

Multi tag will generate repeating function, cause compile error.

openapi-generator version

3.0.2

OpenAPI declaration file content or url

##//modules/openapi-generator/src/test/resources/3_0/rust-server/openapi-v3.yaml /repos/{repoId}: parameters: - in: path name: repoId schema: type: string required: true get: tags: [Repo, Info] operationId: GetRepoInfo

Command line used for generation

bin/rust-server-petstore.sh

Steps to reproduce

Compile the generated code, and you will get the error

Related issues/PRs

Suggest a fix

only generate operation for the first tag