https://pekko.apache.org/japi/pekko-http/snapshot/org/apache/pekko/http/impl/util/S2JMapping.html
S2JMapping
declaration: package: org.apache.pekko.http.impl.util, interface: S2JMapping
https://pekko.apache.org/japi/pekko-http/snapshot/org/apache/pekko/http/impl/util/S2JMapping$.html
S2JMapping$
declaration: package: org.apache.pekko.http.impl.util, class: S2JMapping$