@RequestMapping(
        method = [RequestMethod.POST],
        value = ["/annotations"],
        consumes = ["application/json"]
    fun annotate(  @RequestBody &#x60;annotation&#x60;: Annotation): ResponseEntity<Unit> {
        return ResponseEntity(service.annotate(&#x60;annotation&#x60;), HttpStatus.valueOf(200))
And in the API interface:
    fun annotate(&#x60;annotation&#x60;: Annotation): Unit
openapi-generator version
6.2.1
OpenAPI declaration file content or url
openapi: 3.0.7
info:
  title: title
  version: '0.0.1'
paths:
  /annotations:
    post:
      summary: annotate
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Annotation'
      responses:
        '200':
          description: OK
components:
  schemas:
    Annotation:
      type: object
      properties:
          type: string
          format: uuid
Generation Details
openapi-generator generate -i openapi.yaml -g kotlin-spring -p serviceInterface=true
Steps to reproduce
generate code and open AnnotationsApiController.kt and AnnotationsApiService.kt
Related issues/PRs
Related to #11304
Suggest a fix
If {{paramName}} is changed to {{{paramName}}} in kotlin-spring/bodyParams.mustache, kotlin-spring/returnValue.mustache and in kotlin-spring/service.mustache the code generates successfully.
      [kotlin] Add fix for wrongly encoded backticks for reserved words when generating kotlin-spring server code
      #14027
      [kotlin] Add fix for wrongly encoded backticks for reserved words when generating kotlin-spring server code
      martinvisser/openapi-generator