Dummy table serialized as XML binary

dummy2XML.m

let
//Transform each row of [dummy] table into a binary XML    
    rows = Table.TransformRows(dummy, 
                 each Binary.Combine({Text.ToBinary("<row><key>")
                                     ,Text.ToBinary(Text.From([key]))
                                     ,Text.ToBinary("</key><value>")
                                     ,Text.ToBinary([value])
                                     ,Text.ToBinary("</value></row>")})),
//Wrapping up all the rows in <table> tags
    out = Binary.Combine({Text.ToBinary("<table>")}&
                         rows&
                         {Text.ToBinary("</table>")})
in
    out