[JAVA] Non compilable enums generated with property errorOnUnknownEnum=true

Description

Since version 3.0.30, Java enum generated with IllegalArgumentException is not compilable. In commit linked bellow, method parameter was renamed from text to input, but was left as text in the exception message.

Swagger-codegen version

Since version 3.0.30, issue still present in 3.0.34.

Swagger declaration file content or url

Any open api definition containing enum is impacted.

Command line used for generation

Generated using swagger-codegen-maven-plugin.

Steps to reproduce

1. Create yaml specification containing enum.
2. Generate Java code using swagger-codegen-maven-plugin with additional property errorOnUnknownEnum=true.

<additionalProperties>
  <additionalProperty>errorOnUnknownEnum=true</additionalProperty>
</additionalProperties>

3. Check generated Java enums.

Related issues/PRs

Issue introduced in commit: https://github.com/swagger-api/swagger-codegen-generators/pull/978/commits/065a98cddb111015f25782f223eb159569220f68
Line 47: renamed parameter
Line 53: non compilable exception is thrown

Suggest a fix/enhancement

Simply update the thrown exception message with the new parameter name input.

Inspect the linked commit, especially lines 47 and 53, and reproduce the problem by generating Java enums with swagger-codegen-maven-plugin and errorOnUnknownEnum=true. Confirm that the generated enums compile and that the exception message uses the renamed parameter input rather than the stale name text.