https://developer.android.com/reference/android/net/http/ProxyOptions?authuser=2
ProxyOptions | API reference | Android Developers
api referenceandroiddevelopers
https://access.redhat.com/webassets/avalon/d/red_hat_build_of_eclipse_vert.x/4.0.3/vertx_javadocs/io/vertx/core/net/ProxyOptions.html
ProxyOptions (Vertx Javadocs 4.0.3.GA API)
vertxjavadocsgaapi