https://pekko.apache.org/japi/pekko-http/snapshot/org/apache/pekko/http/impl/engine/client/HostConnectionPoolSpec.html
HostConnectionPoolSpec
declaration: package: org.apache.pekko.http.impl.engine.client, class: HostConnectionPoolSpec
https://pekko.apache.org/japi/pekko-http/snapshot/org/apache/pekko/http/impl/engine/client/HostConnectionPoolSpec.PassThrough.PassThroughTransport$.html
HostConnectionPoolSpec.PassThrough.PassThroughTransport$
declaration: package: org.apache.pekko.http.impl.engine.client, class: HostConnectionPoolSpec, class: PassThrough, class: PassThroughTransport$
passthrough