All operation parameters are incorrectly marked as enums

[devplayer0]

Any parameter to an operation will have x-is-enum and x-is-list-container set on it, regardless of whether or not the parameter actually represents an enum.

The following OpenAPI and swift4 snippets illustrate this:

openapi: "3.0.0"
info:
  version: 1.0.0
  title: Swagger Petstore
  description: A sample API that uses a petstore as an example to demonstrate features in the OpenAPI 3.0 specification
  termsOfService: http://swagger.io/terms/
  contact:
    name: Swagger API Team
    email: apiteam@swagger.io
    url: http://swagger.io
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
servers:
  - url: http://petstore.swagger.io/api
paths:
  /pets/{id}:
    get:
      description: Returns a user based on a single ID, if the user does not have access to the pet
      operationId: find pet by id
      parameters:
        - name: id
          in: path
          description: ID of pet to fetch
          required: true
          schema:
            type: integer
            format: int64
      responses:
        '200':
          description: pet response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Pet'
  /stuff/{stuffType}:
    delete:
      tags:
        - 'stuff'
      description: "Delete the stuff"
      operationId: "deleteStuff"
      parameters:
        - name: "stuffType"
          in: "path"
          required: true
          schema:
            type: 'string'
            enum:
              - ASD
              - FGH
              - JKL
      responses:
        '200':
          description: 'A response'

Generated code:

/**
 * enum for parameter _id
 */
public enum _findPetById: Int64 { 
}

/**
     
 - parameter _id: (path) ID of pet to fetch 
 - parameter completion: completion handler to receive the data and the error objects
 */
open class func findPetById(_id: _findPetById, completion: @escaping ((_ data: Pet?,_ error: Error?) -> Void)) {
    findPetByIdWithRequestBuilder(_id: _id).execute { (response, error) -> Void in
        completion(response?.body, error)
    }
}

/**
 * enum for parameter stuffType
 */
public enum StuffType_deleteStuff: String { 
    case asd = "ASD"
    case fgh = "FGH"
    case jkl = "JKL"
}

/**
 
 - parameter stuffType: (path)  
 - parameter completion: completion handler to receive the data and the error objects
 */
open class func deleteStuff(stuffType: StuffType_deleteStuff, completion: @escaping ((_ data: Void?,_ error: Error?) -> Void)) {
    deleteStuffWithRequestBuilder(stuffType: stuffType).execute { (response, error) -> Void in
       completion(response?.body, error)
    }
}

While the generated code for deleteStuff has the correct inline enum, findPetById generates a nonsense blank enum instead.