[BUG] [Java] [withXml] xml name not used for items wrapped in an array

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• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

I have the following swagger which defined an array of message object.

swagger: "2.0"
definitions:
  Status:
    type: "object"
    properties:
      messages:
        type: "array"
        items:
          $ref: "#/definitions/Message"
          xml:
            name: message
        xml:
          name: messages
          wrapped: true

i want to generate java code which matches the xml below. Note that the message array ( element) wrapped message items and each item are named .

	<status>
		<messages>
			<message>
			</message>
			<message>
			</message>
		</messages>
	</status>

The problem is in the generation of Status java class which contains the messages list :

public class Status implements Serializable {

        @XmlElement(name = "messages") // problem here
	@XmlElementWrapper(name = "messages")
	private List<Message> messages = null;
}

The value of attribut name in XmlElement annotation should be message (without s). The generator ignores the name tag under items tag in the swagger file.

openapi-generator version

5.1.0

OpenAPI declaration file content or url

I'm not sure if the bug is located in this template file but the following line in pojo.mustache seems strange; The value name uses the same variable 'xmlName' for both @XmlElement and @XmlElementWrapper.

// Is a container wrapped={{isXmlWrapped}}
      {{#items}}
  // items.name={{name}} items.baseName={{baseName}} items.xmlName={{xmlName}} items.xmlNamespace={{xmlNamespace}}
  // items.example={{example}} items.type={{dataType}}
  @XmlElement({{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
      {{/items}}
      {{#isXmlWrapped}}
  @XmlElementWrapper({{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
      {{/isXmlWrapped}}

Generation Details

Steps to reproduce

Related issues/PRs

Suggest a fix

Start with modules/openapi-generator/src/main/resources/Java/pojo.mustache and inspect how xmlName is supplied for array items versus the wrapped collection. Use the provided Status definition and XML example to compare the generated annotations. Done means the item annotation uses message while the wrapper retains messages.