anchor.diff:    }
   
     /// Closes this statement, and releases associated resources.
  +  ///
     /// This should be called exactly once for each instance created.
     /// After calling this method, attempting to execute the statement will throw [SqliteException]. 
     void close() {
  
positive.code:   }
  
    /// Executes a single SQL statement.
    /// See [Statement#execute].
    int execute(String statement, [params=const [], bool callback(Row)]) {
      _checkOpen();
      statement = prepare(statement);
  
negative.code:   String toString() => "<Sqlite: ${path}>";
  
    /// Closes the database.
    ///
    /// This should be called exactly once for each instance created.
    /// After calling this method, all attempts to operate on the database
    /// will throw [SqliteException].
  