anchor.diff:  
   /// Basic databases operations
   abstract class DatabaseFactory {
  -  /// Open a database at [path] with the given [options]
  +  /// Open a database at `path` with the given [OpenDatabaseOptions]`options`
     ///
     /// ```
     ///   var databasesPath = await getDatabasesPath();
  
positive.code:   /// Convenience method for updating rows in the database. Returns
    /// the number of changes made
    ///
    /// Update [table] with [values], a map from column names to new column
    /// values. null is a valid value that will be translated to NULL.
    ///
    /// [where] is the optional WHERE clause to apply when updating.
    /// Passing null will update all rows.
    ///
    /// You may include ?s in the where clause, which will be replaced by the
    /// values from [whereArgs]
    ///
    /// [conflictAlgorithm] (optional) specifies algorithm to use in case of a
    /// conflict. See [ConflictResolver] docs for more details
    ///
    /// ```
    /// int count = await db.update(tableTodo, todo.toMap(),
  
negative.code: 
    /// Convenience method for deleting rows in the database.
    ///
    /// Delete from `table`
    ///
    /// `where` is the optional WHERE clause to apply when updating. Passing null
    /// will update all rows.
    ///
    /// You may include ?s in the where clause, which will be replaced by the
    /// values from `whereArgs`
    ///
    /// Returns the number of rows affected if a whereClause is passed in, 0
    /// otherwise. To remove all rows and get a count, pass '1' as the
  