Where can I find the CSharp generator class in branch 3.0.0 so I can edit it?

Description

I'm using the latest version from branch 3.0.0 (3.0.32 (current stable)) and wanted to make modifications to the CSharp generator. I noticed that unlike V2 there's no longer a languages folder where I can find the language-specific classes and that it was moved to a separate repo.

Since I'm not a Java expert, I'm not sure how the generator gets the language-specific classes in runtime when running the following command locally (Is it possible they're embedded somewhere in the jar?):

c:\source\oas3-migration\swagger-codegen>java --add-opens=java.base/java.util=ALL-UNNAMED -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate -l csharp -i C:/source/openapi/spec.json -o /tmp/dotnet -t C:\source\oas3-migration\dotnet-swagger-templates -c my-config.json

So, how/where can I find and edit the default CSharp generator classes (i.e. CSharpClientCodegen.java) in the current project? What command/param should I run/use to tell the generator to use the "override" of CSharpClientCodegen?

Thanks in advance!

Swagger-codegen version

I'm using the latest version from branch 3.0.0 (3.0.32 (current stable))

Swagger declaration file content or URL

N/A

Command line used for generation

c:\source\oas3-migration\swagger-codegen>java --add-opens=java.base/java.util=ALL-UNNAMED -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate -l csharp -i C:/source/openapi/spec.json -o /tmp/dotnet -t C:\source\oas3-migration\dotnet-swagger-templates -c my-config.json

Steps to reproduce

• Get the latest version from branch 3.0.0
• Run mvn clean install -DskipTests
• Generate client running the command specified above

Related issues/PRs

Suggest a fix/enhancement

It'd be great if we could expand the documentation with the scenario described in this issue.

Start with the CLI command in the issue and inspect the swagger-codegen-generators repository alongside the CSharpClientCodegen.java reference. Document where the default C# generator is located, how it is loaded at runtime, and which command or parameter supports an override; the documentation is done when this workflow is explained clearly.