[BUG] oneOf property in response doesn't work

I am trying to generate different response model based on "oneOf" attribute, but it doesn't work at all
openapi-generator-maven-plugin : 5.3.0
openapi-generator.version : 5.3.0

Error message :

[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /Users/mostafaramadan/Documents/DummyProjects/openapi/target/generated-sources/openapi/src/main/java/com/baeldung/openapi/api/SomethingApi.java:[8,34] cannot find symbol
  symbol:   class OneOfApiResultOkApiResultError
  location: package com.baeldung.openapi.model
[ERROR] /Users/mostafaramadan/Documents/DummyProjects/openapi/target/generated-sources/openapi/src/main/java/com/baeldung/openapi/api/SomethingApiDelegate.java:[3,34] cannot find symbol
  symbol:   class OneOfApiResultOkApiResultError
  location: package com.baeldung.openapi.model
[ERROR] /Users/mostafaramadan/Documents/DummyProjects/openapi/target/generated-sources/openapi/src/main/java/com/baeldung/openapi/api/SomethingApi.java:[41,28] cannot find symbol
  symbol:   class OneOfApiResultOkApiResultError
  location: interface com.baeldung.openapi.api.SomethingApi
[ERROR] /Users/mostafaramadan/Documents/DummyProjects/openapi/target/generated-sources/openapi/src/main/java/com/baeldung/openapi/api/SomethingApiDelegate.java:[32,28] cannot find symbol
  symbol:   class OneOfApiResultOkApiResultError
  location: interface com.baeldung.openapi.api.SomethingApiDelegate
[ERROR] /Users/mostafaramadan/Documents/DummyProjects/openapi/target/generated-sources/openapi/src/main/java/com/baeldung/openapi/api/SomethingApi.java:[33,81] cannot find symbol
  symbol:   class OneOfApiResultOkApiResultError
  location: interface com.baeldung.openapi.api.SomethingApi
[ERROR] /Users/mostafaramadan/Documents/DummyProjects/openapi/target/generated-sources/openapi/src/main/java/com/baeldung/openapi/api/SomethingApi.java:[35,65] cannot find symbol
  symbol:   class OneOfApiResultOkApiResultError
  location: interface com.baeldung.openapi.api.SomethingApi
[ERROR] /Users/mostafaramadan/Documents/DummyProjects/openapi/target/generated-sources/openapi/src/main/java/com/baeldung/openapi/model/ApiResultOk.java:[22,10] incompatible types: java.lang.String cannot be converted to java.lang.Boolean
[ERROR] /Users/mostafaramadan/Documents/DummyProjects/openapi/target/generated-sources/openapi/src/main/java/com/baeldung/openapi/model/ApiResultError.java:[22,11] incompatible types: java.lang.String cannot be converted to java.lang.Boolean
[INFO] 8 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  2.831 s
[INFO] Finished at: 2022-02-12T18:36:39+02:00

Yml file:

openapi: "3.0.0"
info:
  version: 1.0.0
  title: Swagger Petstore
  license:
    name: MIT
servers:
  - url: http://localhost:8080/
paths:
  /something:
    get:
      responses:
        '200':
          description: Result
          content:
            application/json:
              schema:
                oneOf:
                  - $ref: '#/components/schemas/ApiResultOk'
                  - $ref: '#/components/schemas/ApiResultError'
              examples:
                success:
                  summary: Example of a successful response
                  value:
                    result: true
                    token: abcde12345
                error:
                  summary: Example of an error response
                  value:
                    result: false
                    errorCode: "00002"
                    errorMsg: "duplicated account already exist"

components:
  schemas:
    ApiResultOk:
      type: object
      properties:
        result:
          type: boolean
          enum: [ true ]
        token:
          type: string
      required:
        - result
        - token
    ApiResultError:
      type: object
      properties:
        result:
          type: boolean
          enum: [ false ]
        errorCode:
          type: string
          example: "00002"
        errorMsg:
          type: string
          example: "duplicated account already exist"

Pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<artifactId>spring-boot-libraries-2</artifactId>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.6.3</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>ch.qos.logback</groupId>
			<artifactId>logback-classic</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-jpa</artifactId>
		</dependency>

		<!-- openapi -->
		<dependency>
			<groupId>org.openapitools</groupId>
			<artifactId>openapi-generator</artifactId>
			<version>${openapi-generator.version}</version>
		</dependency>
		<dependency>
			<groupId>org.openapitools</groupId>
			<artifactId>jackson-databind-nullable</artifactId>
			<version>${jackson-databind.version}</version>
		</dependency>
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger2</artifactId>
			<version>${springfox.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.awaitility</groupId>
			<artifactId>awaitility</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.openapitools</groupId>
				<artifactId>openapi-generator-maven-plugin</artifactId>
				<version>5.3.0</version>
				<executions>
					<execution>
						<goals>
							<goal>generate</goal>
						</goals>
						<configuration>
							<inputSpec>
								${project.basedir}/src/main/resources/petstore.yml
							</inputSpec>
							<generatorName>spring</generatorName>
							<apiPackage>com.baeldung.openapi.api</apiPackage>
							<modelPackage>com.baeldung.openapi.model</modelPackage>
							<supportingFilesToGenerate>
								ApiUtil.java
							</supportingFilesToGenerate>
							<configOptions>
								<delegatePattern>true</delegatePattern>
							</configOptions>
						</configuration>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>

	<properties>
		<jobrunr.version>3.1.1</jobrunr.version>
		<awaitility.version>4.0.3</awaitility.version>
		<openapi-generator.version>5.3.0</openapi-generator.version>
		<spring.data.version>2.4.5</spring.data.version>
		<jackson-databind.version>0.2.1</jackson-databind.version>
		<springfox.version>2.9.2</springfox.version>
	</properties>

</project>

Start with the OpenAPI schema in src/main/resources/petstore.yml and reproduce generation with the spring generator configured in pom.xml using version 5.3.0. Inspect the generated SomethingApi.java, SomethingApiDelegate.java, ApiResultOk.java, and ApiResultError.java files; done means the generated project compiles and the oneOf response model is generated consistently.