/**
* @return true if this is an FQ name of a fictitious class representing the function type, e.g.
* kotlin.Function1 (but NOT kotlin.reflect.KFunction1)
*/
public static boolean isNumberedFunctionClassFqName(@NotNull FqNameUnsafe fqName) {
List<Name> segments = fqName.pathSegments();
if (segments.size() != 2) return false;
if (!BUILT_INS_PACKAGE_NAME.equals(first(segments))) return false;
String shortName = last(segments).asString();
return BuiltInFictitiousFunctionClassFactory.parseClassName(
shortName, BUILT_INS_PACKAGE_FQ_NAME)
!= null;
}
