Method indent

src/FormatVisitor.cpp:1854–1864

}

std::string FormatVisitor::indent() {
    std::stringstream ss;
    for (int i = 0; i < indent_; i++) {
        if (config_.get<bool>("use_tab")) {
            ss << "\t";
        } else {
            ss << " ";
        }
    }
    return ss.str();
}

std::string FormatVisitor::indentWithAlign() {
    std::stringstream ss;