Example for Wrapped Xml array elements is generated incorrectly

[SariAlalem]

SwaggerUI 3.11.0
This issue was reported previously and resolved, but seems it's back:
#2577

Q	A
Bug or feature request?	Bug
Which Swagger/OpenAPI version?	Tried both 2.0 and OpenApi 3.0
Which Swagger-UI version?	3.11.0
How did you install Swagger-UI?	Hosted on my local machine
Which browser & version?	Chrome 63.0
Which operating system?	Windows 10

Demonstration API definition

https://integration.test-freightos.com/api-docs/docs-aggregator/lufthansa/Availability

My use case:

...
"masterConsignments": {
            "xml": {
              "wrapped": true
            },
            "type": "array",
            "items": {
              "xml": {
                "name": "masterConsignment"
              },
              "$ref": "#/components/schemas/AvailabilityMasterConsignmentReq"
            }
          }
...

Actual example output:

<masterConsignments>
		<masterConsignments>
			<product>
				....
			</product>
		</masterConsignments>
</masterConsignments>

Expected example output:

<masterConsignments>
		<masterConsignment>
			<product>
				....
			</product>
		</masterConsignment>
</masterConsignments>

[quetzalcoatl]

Maybe related: https://stackoverflow.com/q/53216295/717732

[tuffnatty]

Looks like a duplicate of #2907.