File Tree: Wie kann ich einen weiteren String auf der Verbindungslinie setzen?

\documentclass[11pt,a4paper,titlepage,bibliography=totoc,numbers=noenddot,abstract=on,multi,dvipsnames,svgnames,x11names]{scrreprt}

\usepackage{storebox}
\usepackage[edges]{forest}
\usepackage{adjustbox}

%Zeilenumbruch in der tikz Umgebung!
% addaswyd o gôd Sašo Živanović: http://tex.stackexchange.com/a/296771/
\def\hiddenparcommand{\par}
\newcommand\otherhiddenparcommand{\par\noindent}
\newcommand\hiddencommacommand{, }
\forestset{%
    declare keylist register={split here ids},% the list of nodes to split the tree at
    split here ids={},
    declare keylist register={split here interjects},% the list of comments to put in between the tree parts
    split here interjects={},
    declare keylist={split here auto siblings}{},% a list to hold the siblings which need edge restoration
    declare toks register=split here toks,
    declare dimen register=tmpdima,
    tmpdima'=0pt,
    declare dimen register=tmpdimb,
    tmpdimb'=0pt,
    declare dimen register=tmpdimc,
    tmpdimc'=0pt,
    to widest/.style={
        tikz+={\path (\forestregister{tempdima}, \forestoption{y}) -- (\forestregister{tempdimb}, \forestoption{y});},
    },
    hide commas/.style={%
        split here toks+={\hiddencommacommand},
        split here toks+={#1},
    },
    split dir tree pre/.style={%
        label={[text=gray, anchor=north, font=\scriptsize]below:{[cont.]}{}},
    },
    split dir tree post/.style={%
        label={[font=\scriptsize, anchor=south, text=gray]above:{[cont.]}{}},
    },
    split dir tree auto post/.style={% this gets applied to the first node after a break
        split dir tree post,
        tempkeylistc'={},
        tmpdimb/.option=y,
        for nodewalk={
            while={
                > ORw2+d _+d < On=! & {y}{tmpdimb}{##2-##1} {\textheight-#1} {n'}{1}%
            }{
                next,
                tempkeylistc/.option=name
            }%
        }{},
        % save the list
        split here auto siblings/.register=tempkeylistc,
        tikz+/.process={% this tries to redraw the edges to the following siblings
            OOw2{edge}{id}%
            {%
                \path [##1] (!u.parent anchor |- .north) ++(\forestregister{folder indent},1ex) coordinate (before ##2) |- (.child anchor);
                \edef\tempa{\foresteoption{split here auto siblings}}
                \foreach \i in \tempa \path [##1] (before ##2) |- ({forest cs:\i.child anchor});
            }%
        },
    },
    split dir tree/.code={%
        \forestset{%
            draw tree stage/.style={
                for root'={
                    tempdima/.min={%
                        >OOw2+d{x}{min x}{####1+####2}%
                    }{tree},
                    tempdimb/.max={%
                        >OOw2+d{x}{max x}{####1+####2}%
                    }{tree},
                    for tree={%
                        to widest,
                    },
                },
                tempcountb'=-1,
                do until={%
                    strequal((split_here_ids),"")
                }{%
                    tempkeylistb'={},
                    tempkeylista'={},
                    split register={split here ids}{,}{tempcounta,tempkeylistb+},
                    split register={split here interjects}{,}{temptoksa,tempkeylista+},
                    split here ids'/.register=tempkeylistb,
                    split here interjects'/.register=tempkeylista,
                    % Sašo Živanović: http://chat.stackexchange.com/transcript/message/28484520#28484520
                    for nodewalk={%
                        draw tree processing order/.style={%
                            filter={tree}{> ORw+n< OR> & {id}{tempcounta}{########1+1}{id}{tempcountb}}%
                        }%
                    }{},
                    for root'={draw tree},
                    TeX/.process={Rw{temptoksa}{\otherhiddenparcommand ####1\hiddenparcommand}},
                    tempcountb'/.register=tempcounta,
                },
                for nodewalk={%
                    draw tree processing order/.style={%
                        filter={tree}{>OR>{id}{tempcountb}}%
                    }%
                }{},
                for root'={draw tree},
            },
        }%
    },
    split dir here auto/.style n args=2{%
        split dir tree pre,
        !next node.split dir tree auto post=#2,
        split here ids+/.option=id,
        %     !next node.split resume here ids+/.option=id,
        split={#1}{,}{split here toks,hide commas},
        split here interjects/.register=split here toks,
    },
    split dir tree auto/.style={%
        split dir tree,
        before drawing tree={%
            tempdima/.max={y}{tree},
            tempdimc/.register=tempdima,
            tempdimd/.min={y}{tree},
            tempdima-/.register=tempdimd,
            tempdimb'=\textheight,
            tmpdima'=10ex,
            tmpdimc'=\pagetotal,
            while={%
                >RR>{tempdima}{tempdimb}%
            }{%
                for nodewalk={%
                    root',
                    until={%
                        > ROw2+d RRw2+d > {tempdimc}{y}{##1-##2} {tmpdima}{tmpdimc}{\textheight-##2-##1}%
                    }{next node},
                    previous node,
                    split dir here auto/.process={R_w2{tmpdima}{continued}{{##2}{##1}}},
                    next node,
                    tempdima/.option=y,
                    tempdimc/.register=tempdima,
                    tempdima-/.register=tempdimd,
                    tmpdima'=15ex,
                    tmpdimc'=0pt
                }{},
            },
        },
    },
}
%Zeilenumbruch in der tikz Umgebung! Ende

\begin{document}    
\begin{forest}
    for tree={
        folder,
        grow'=0,
        fit=band,
    },
    split dir tree auto,
    [ XYZ
    [ XYZ
    [ XYZ,edge label={node[pos=0.75,above,font=\scriptsize]{1}}
    [ XYZ,edge label={node[pos=0.75,above,font=\scriptsize]{A}}
    [ XYZ,edge label={node[pos=0.75,above,font=\scriptsize]{3}} ]
    ]
    ]
    [ XYZ
    [ XYZ
    [ XYZ ]
    ]
    ]
    [ XYZ
    [ XYZ
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    ]
    [ XYZ
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    ]
    [ XYZ
    [ XYZ ]
    ]
    [ XYZ
    [ XYZ ]
    [ XYZ ]
    ]
    ]
    [ XYZ
    [ XYZ
    [ XYZ ]
    [ XYZ ]
    ]
    ]
    [ XYZ
    [ XYZ
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    [ XYZ ]
    ]
    ]
    ]
    ]
\end{forest}

\end{document}