anchor.diff:    /// (it uses Zone in order to be re-entrant) transaction mechanism
     ///
     // User [transaction] instead
  +  // Deprecated since 2018-03-01 - 0.8.1
     @deprecated
     Future<T> inTransaction<T>(Future<T> action(), {bool exclusive});
   
  
positive.code: ///
  abstract class Batch {
    // User [apply] instead, it is not really a commit yet...
    @deprecated
    Future<List<dynamic>> commit({bool exclusive, bool noResult});
  
  
negative.code:   /// ensure that no other calls outside the inner action will
    /// access the database
    /// Use [Zone] so should be deprecated soon starting 0.8.1
    // Deprecated since 2018-03-01 - 0.8.1
    @deprecated
    Future<T> synchronized<T>(Future<T> action());
  
  