<< v.line_prefix_ << "\t" << gen(v.v_.force_send_changed()) << ",// force_send_changed\n"\r
<< gen(v.v_.states(), v.line_prefix_ + '\t') << ",// states\n"\r
<< v.line_prefix_ << '\t' << gen(v.v_.writable()) << ",// writable\n"\r
<< v.line_prefix_ << "\t" << gen(v.v_.force_send_changed()) << ",// force_send_changed\n"\r
<< gen(v.v_.states(), v.line_prefix_ + '\t') << ",// states\n"\r
<< v.line_prefix_ << '\t' << gen(v.v_.writable()) << ",// writable\n"\r