如何使用openapi-generator-maven-plugin生成没有属性的基模型类

<build>
  <plugins>
    <plugin>
      <groupId>org.openapitools</groupId>
      <artifactId>openapi-generator-maven-plugin</artifactId>
      <version>VERSION</version>
      <executions>
        <execution>
          <id>generate</id>
          <goals>
            <goal>generate</goal>
          </goals>
          <configuration>
            <inputSpec>${project.basedir}/path/to/openapi/spec.yaml</inputSpec>
            <generatorName>java</generatorName>
            <configOptions>
              <sourceFolder>src/main/java</sourceFolder>
              <modelPackage>com.example.models</modelPackage>
              <apiPackage>com.example.apis</apiPackage>
            </configOptions>
          </configuration>
        </execution>
      </executions>
    </plugin>
  </plugins>
</build>

mvn clean generate-sources