Supported languages: generator.swagger.io vs swagger-codegen v3.0.26 through v3.0.33

Description

• What is the difference between the engine behind the https://generator.swagger.io and latest release of swagger-codegen-cli-3.0.26.jar?

• How to get the swagger-codegen-cli JAR that supports equally rich set of the languages as the online generator?

The online generator offers much more languages

>  curl -s -X GET "https://generator.swagger.io/api/gen/clients" -H  "accept: application/json" | jq
[
  "ada",
  "akka-scala",
  "android",
  "apex",
  "bash",
  "clojure",
  "cpprest",
  "csharp",
  "csharp-dotnet2",
  "cwiki",
  "dart",
  "dart-jaguar",
  "dynamic-html",
  "eiffel",
  "elixir",
  "elm",
  "erlang-client",
  "flash",
  "go",
  "groovy",
  "haskell-http-client",
  "html",
  "html2",
  "java",
  "javascript",
  "javascript-closure-angular",
  "jaxrs-cxf-client",
  "jmeter",
  "kotlin",
  "lua",
  "objc",
  "perl",
  "php",
  "powershell",
  "python",
  "qt5cpp",
  "r",
  "ruby",
  "rust",
  "scala",
  "scala-gatling",
  "scalaz",
  "swagger",
  "swagger-yaml",
  "swift",
  "swift3",
  "swift4",
  "swift5",
  "tizen",
  "typescript-angular",
  "typescript-angularjs",
  "typescript-aurelia",
  "typescript-fetch",
  "typescript-inversify",
  "typescript-jquery",
  "typescript-node",
  "ue4cpp"
]

than the CLI generator:

java -jar .\swagger-codegen-cli-3.0.26.jar langs | sed 's/\, /\n/g; s/\[/\n/g; s/\]/\n/g'
Available languages:
dart
aspnetcore
csharp
csharp-dotnet2
go
go-server
dynamic-html
html
html2
java
jaxrs-cxf-client
jaxrs-cxf
inflector
jaxrs-cxf-cdi
jaxrs-spec
jaxrs-jersey
jaxrs-di
jaxrs-resteasy-eap
jaxrs-resteasy
micronaut
spring
nodejs-server
openapi
openapi-yaml
kotlin-client
kotlin-server
php
python
python-flask
r
ruby
scala
scala-akka-http-server
swift3
swift4
swift5
typescript-angular
typescript-axios
typescript-fetch
javascript

Swagger-codegen version

• Online: says Swagger Generator 2.4.20
• CLI: 3.0.26

Related issues/PRs

• https://github.com/swagger-api/swagger-codegen/issues/11052

Start with the generator.swagger.io /api/gen/clients response and the swagger-codegen-cli 3.0.26 langs command, then compare the reported language sets and versions. Review related issue #11052; done means documenting the difference and explaining whether a CLI JAR with equivalent language support exists or what change would be required.