docs: def is_modified(row, dialect):
      """
      Has the row data been modified?
  
      This method inspects the row, and iterates over all columns looking for changes
      to the (processed) data, skipping over unmodified columns.
  
      :param row: SQLAlchemy model instance
      :param dialect: :py:class:`~sqlalchemy.engine.interfaces.Dialect`
      :return: True if any columns were modified, else False
      """
      ins = inspect(row)
      modified_cols = set(get_column_keys(ins.mapper)) - ins.unmodified
      for col_name in modified_cols:
          current_value = get_column_attribute(row, col_name, dialect=dialect)
          previous_value = get_column_attribute(row, col_name, use_dirty=False, dialect=dialect)
          if previous_value != current_value:
              return True
      return False