`Unnecessary use of string interpolation` while the argument is used as the whole path.

Steps to Reproduce

1. Create any code like this:

  @Get(path: '{url}')
  Future<Response<List<Status>>> statusesByUrl(@Path() String url);

2. Run build_runner and open its result

Expected results:

  @override
  Future<Response<List<Status>>> statusesByUrl(String url) {
    final Uri $url = Uri.parse(url); // or any other way to avoid the warning
    final Request $request = Request(
      'GET',
      $url,
      client.baseUrl,
    );
    return client.send<List<Status>, Status>($request);
  }

Actual results:

  @override
  Future<Response<List<Status>>> statusesByUrl(String url) {
    final Uri $url = Uri.parse('${url}'); // WARNING: Unnecessary use of string interpolation.
    final Request $request = Request(
      'GET',
      $url,
      client.baseUrl,
    );
    return client.send<List<Status>, Status>($request);
  }

@Get(path: '{url}#') fixes the warning but it's a dirty hack

[techouse]

@Get(path: '{url}#') fixes the warning but it's a dirty hack

In general, analysis tools should ignore generated files. You can achieve that by adding them to the exclude list in your analysis_options.yaml, i.e.

include: package:lints/recommended.yaml

analyzer:
  exclude:
    - "**.g.dart"
    - "**.chopper.dart"

Otherwise, we could add something like

// ignore_for_file: unnecessary_string_interpolations

[techouse]

@gualse I have fixed this in #501, however, it will take some time to release this. If you need to use it ASAP you can either modify your analysis_options.yaml as explained in the comment above, or add this to your pubspec.yaml

dependency_overrides:
  chopper_generator:
    git:
      url: https://github.com/techouse/chopper.git
      ref: fix/chopper_generator/ignore_unnecessary_string_interpolations
      path: chopper_generator

[techouse]

@gualse I have deleted the PR branch as it's due to be released in chopper_generaror v7.0.4 in #502. Meanwhile, you can simply use the development branch of this repo.