objc_only_listener = interface +o {}
java_only_listener = interface +j {}

# Generating and compiling this makes sure other languages don't break
# on references to interfaces they don't need.
uses_single_language_listeners = interface +o +j +c {
  callForObjC(l: objc_only_listener);
  callForJava(l: java_only_listener);
}
