[BUG] [GO] can't generate codes with xml tag

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?
• [] [Optional] Bounty to sponsor the fix (example)

Description

even though i use withXml=true, can’t generate codes with xml tag .

actual:

type ResponseSample struct {

	StatusCode int64 `json:"status_code"`

	Message string `json:"message"`
}

expected(like this):

type ResponseSample struct {

        XMLName xml.Name `xml:"response"`

	StatusCode int64 `xml:"status_code"`

	Message string `xml:"message"`
}

My Go version: go version go1.12.13 darwin/amd64

openapi-generator version

v4.1.2

OpenAPI declaration file content or url

ResponseSample:
      type: object
      properties:
        status_code:
          type: integer
          format: int64
          example: 0
        message:
          type: string
          example: 'success'
      xml:
        name: response
      required:
        - status_code
        - message

Command line used for generation

docker run -v ${PWD}:/local openapitools/openapi-generator-cli:v4.1.2 generate \
  -i /local/openapi/openapi.yaml \
  -g go-server \
  -p withXml=true \
  --output /local/${GENERATE_PATH}

Steps to reproduce

please paste the above yaml, then docker run.

Related issues/PRs

https://github.com/OpenAPITools/openapi-generator/issues/490

Suggest a fix

[wing328]

# if you've executed sbt assembly previously it will use that instead.
export JAVA_OPTS="${JAVA_OPTS} -Xmx1024M -DloggerPath=conf/log4j.properties"
ags="generate -t modules/openapi-generator/src/main/resources/go -i $SPEC -g $GENERATOR -o $STUB_DIR --additional-properties packageName=petstore,withXml=true,withGoCodegenComment=true $@"

That’s what we use in the Go Petstore (xml) shell script so it looks to me the following is correct: --additional-properties withXml=true

[wing328]

If it’s still an issue, please ping me via Slack.

Closing this for the time being.