if (!topic.hasSubTopics())
{
GMX_THROW(InvalidInputError(
formatString("Help topic '%s' has no subtopics",
impl_->currentTopicAsString().c_str())));
}
if (!topic.hasSubTopics())
{
GMX_THROW(InvalidInputError(
formatString("Help topic '%s' has no subtopics",
impl_->currentTopicAsString().c_str())));
}