moderncv: add post script to cover letter

Question

I am currently writing a cover letter for a german company and I need to add a post script after the closing and before the enclosure of the letter (i.e. after my signature and before the line were I list my study certificates, see the example code below). Is there already a command like \ps or is there a way to define a new command to that purpose?

\documentclass[11pt,a4paper,sans]{moderncv}       
\moderncvstyle{classic}                             
\moderncvcolor{blue}                                
\usepackage[utf8]{inputenc}                       
\usepackage[ngerman]{babel}

\name{Hans}{im Glück}
\title{M.Sc.}                               
\address{Glücksstr. 13}{55444 Glücksdorf}{Deutschland \medskip} 
\phone[mobile]{+49~(176)~111~2222}                    
\email{[email protected]}                               


\begin{document}

\recipient{Max Mustermann AG}{Personalwesen \\ Hans-Beispiel-Straße 2 \\    55555 Beispielhausen}

\date{\today}
\opening{Dear Sir or Madam,}
\closing{Your sincerely, \vspace{0,3cm} \\
%\includegraphics[width = 4.5cm]{signature.png} \vspace{-1,0cm}}
\enclosure[Attachment]{study certifcates}          
\makelettertitle

text...

\bigskip


\makeletterclosing




\end{document}

Thank you very much

Answer 1

ok I found the answer myself. You have to edit the moderncv.cls and the moderncvbodyi.sty files: add a new command e.g.

\newcommand*{\postscript}[1]{\def\@postscript{#1}}

in the letter design commands definitions section of the moderncv.cls file

and then add the line

   {\@postscript\\[3em]}%

before the line

{\color{color2}\itshape\enclname: \@enclosure}}%

in the moderncvbodi.sty files, in the letter style definition section (there are five such files: moderncvbodi.sty ,..., moderncvbodv.sty, just add the line to each of the files)