https://pekko.apache.org/japi/pekko-http/snapshot/org/apache/pekko/http/impl/engine/ws/WebSocketServerSpec.TestSetup.html
WebSocketServerSpec.TestSetup
declaration: package: org.apache.pekko.http.impl.engine.ws, class: WebSocketServerSpec, class: TestSetup
https://pekko.apache.org/japi/pekko-http/current/org/apache/pekko/http/impl/engine/ws/WebSocketServerSpec.TestSetup.html
WebSocketServerSpec.TestSetup