// ĠTop - level Ġbuild Ġfile Ġwhere Ġyou Ġcan Ġadd Ġconfiguration Ġoptions Ġcommon Ġto Ġall Ġsub - projects / modules . Ċ plugins Ġ{ ĊĠĠĠ Ġid (" com . android . application ") Ġversion Ġ" 7 . 1 . 3 " Ġapply Ġfalse ĊĠĠĠ Ġid (" com . android . library ") Ġversion Ġ" 7 . 1 . 3 " Ġapply Ġfalse ĊĠĠĠ Ġid (" org . jetbrains . kotlin . android ") Ġversion Ġ" 1 . 6 . 2 0 " Ġapply Ġfalse Ċ } Ċ Ċ tasks . register (" clean ", ĠDelete :: class ) Ġ{ ĊĠĠĠ Ġdelete ( root Project . build Dir ) Ċ } Ċ