package Ġcom . sn j . lets chat . model Ċ data Ġclass ĠMessage ( val Ġid : String ?, Ġval Ġmess gage : String ?, Ġval Ġtime Stamp Ġ: ĠString , Ġval Ġuser Ġ: ĠUser ?, Ġval Ġfile : ĠFile ?, Ġvar Ġmap Ġ: ĠMap ?) Ċ { ĊĠĠĠ Ġconstructor (): this (" ",""," ", null , null , null ) Ċ }