[BUG] [Spring][4.3.0] allOf -> syntax error on generated code

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?

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Description

syntax error on generated code

openapi-generator version

4.3.0, 4.2.3, 4.2.0

OpenAPI declaration file content or url

 schemas:
    Foo:
      type: object
      properties:
        name:
          type: string
    Bar:
      allOf:
        - $ref: '#/components/schemas/Foo'
      type: object
      properties:
        status:
          type: string

generates

 @Override
  public int hashCode() {
    return Objects.hash(statussuper.hashCode());
  }

which causes the JDK 12 compiler:
.../Bar.java:59: error: cannot find symbol
return Objects.hash(statussuper.hashCode());
^
symbol: variable statussuper
location: class Bar

the generated code misses a 'komma'

Command line used for generation

generatorName = "spring"
configOptions = [ java12: "true", library: "spring-boot", dateLibrary: "java12",
delegatePattern:"true", unhandledException: "true"
]

Steps to reproduce

Related issues/PRs

Suggest a fix

Start with the supplied OpenAPI declaration and Spring generator configuration, then reproduce the generation and inspect the generated Bar.java hashCode method. Done means the generated Java code compiles and no longer references the malformed statussuper expression.