Duplicate code in the "_gen.go" file

### tfplugingen-framework CLI version

tfplugingen-framework module: v0.4.0

### Provider Code Spec File

```JSON
It is very long. Could you generate it using this ?
tfplugingen-openapi generate --config ./generator_config.yml --output ./provider-code-spec.json ./jira_cloud.json
```

### Expected Behavior

Generate a "_gen.go" file without duplicates

### Actual Behavior

Many of my generated func() and struct are duplicated in the "_gen.go". As a result, it's impossible to do “go install .” because there are too many errors in the "_gen.go" file.

### Additional Information

API used (json file):
https://developer.atlassian.com/cloud/jira/platform/swagger-v3.v3.json

generator config:
provider:
name: jira
resources:
project:
create:
path: /rest/api/3/project
method: POST
read:
path: /rest/api/3/project
method: GET
update:
path: /rest/api/3/project/{projectIdOrKey}
method: PUT
delete:
path: /rest/api/3/project/{projectIdOrKey}
method: DELETE
workflow_scheme:
create:
path: /rest/api/3/workflowscheme
method: POST
read:
path: /rest/api/3/workflowscheme
method: GET
update:
path: /rest/api/3/workflowscheme/update
method: POST
delete:
path: /rest/api/3/workflowscheme/{id}
method: DELETE

For the project resource, it works perfectly, but does not work for the workflow_scheme resource.

### Code of Conduct

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