[BUG][dart-dio] Generates call to non-existant .replace method

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• [] Have you validated the input using an OpenAPI validator (example)?
  • That seems like an potentially dangerous, outdated link ^
• 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?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

dart_dio Generates code that doesn't compile. Assuming you did the steps below to generate the dart library:

1. Some imports are missing, I assume this is tracked in #19144
2. in src/model/resource.dart non-compiling code without clear semantics is generated. Here is a simplified version of whats generated:

ResourceBuilder result = ...;
JsonObject valueDes = ...;
result.path.replace(valueDes);

• .path is an optional attribute, calling a method unconditionally is no valid dart
• .path is of type JsonObject and not ResourceBuilder so there is no .replace method defined

openapi-generator version

OpenAPI Generator 7

OpenAPI declaration file content or url

https://app.swaggerhub.com/apis/Plattform_i40/AssetAdministrationShellRepositoryServiceSpecification/V3.0_SSP-001

Generation Details

java -jar openapi-generator-cli-7.7.0.jar generate -g dart-dio -i /home/derdilla/co24it/dart_aas/Plattform_i40-AssetAdministrationShellRepositoryServiceSpecification-V3.0_SSP-001-resolved.yaml -o /home/derdilla/co24it/dart_aas_gen --additional-properties=pubLibrary=dart_aas,pubVersion=1.0.0,serializationLibrary=built_value,finalProperties=false

Steps to reproduce

1. run the generator
2. open src/model/resource.dart

Related issues/PRs

Suggest a fix

Without deeper knowledge of how OpenApi generator works, this seems like an incorrect or outdated template.

Run the listed OpenAPI Generator 7.7.0 command with the referenced declaration, then inspect the generated src/model/resource.dart. Trace the generated result.path.replace(valueDes) expression and determine the generator source responsible for it. Done means the dart-dio output compiles without the invalid optional access or nonexistent replace call.