[BUG][Dart] --name-mappings is not applied to property names

[valpackett]

Description

The Dart generator does not apply --name-mappings which are e.g. necessary to work around a field called _.

openapi-generator version

0e05cf26d94

OpenAPI declaration file content or url

openapi: '3.0.0'
info:
  version: 1.0.0
  title: test
paths:
  /test:
    get:
      summary: sample
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  _:
                    type: string

Generation Details

java -jar /home/val/.m2/repository/org/openapitools/openapi-generator-cli/7.6.0-SNAPSHOT/openapi-generator-cli-7.6.0-SNAPSHOT.jar generate -i spec.yaml -o dart/ -g dart --name-mappings _=underscore

Steps to reproduce

generate, see this:

class TestGet200Response {
  /// Returns a new [TestGet200Response] instance.
  TestGet200Response({
    this.,
  });

  ///
  /// Please note: This property should have been non-nullable! Since the specification file
  /// does not include a default value (using the "default:" property), however, the generated
  /// source code must fall back to having a nullable type.
  /// Consider adding a "default:" property in the specification file to hide this note.
  ///
  String? ;

  @override
  bool operator ==(Object other) => identical(this, other) || other is TestGet200Response &&
    other. == ;

  @override
  int get hashCode =>
    // ignore: unnecessary_parenthesis
    ( == null ? 0 : !.hashCode);
  // etc…
}

Related issues/PRs

#18662 for Erlang

Suggest a fix

…