// ĠTop - level Ġbuild Ġfile Ġwhere Ġyou Ġcan Ġadd Ġconfiguration Ġoptions Ġcommon Ġto Ġall Ġsub - projects / modules . Ċ tasks . create < Delete >(" clean ") Ġ{ ĊĠĠĠ Ġdelete ( root Project . build Dir ) Ċ }