svoid jda_setAvatar(virtual JDA jda, S imageID) {
  virtual Icon icon = call(getClass_vmName_mandatory(gazelle_jda(), "net.dv8tion.jda.core.entities.Icon"), 'from, loadImageAsFile(imageID));
  call(call(call(jda_selfUser_gen(jda), 'getManager), 'setAvatar, icon), 'queue,
    (java.util.function.Consumer) x -> { print("success"); },
    (java.util.function.Consumer) x -> { print("error"); });
}