Attach properties to the Dataframe to carry along ODF metadata

    :param df: The dataframe to be modified
    :param headers: The ODF header lines
    :param model: The ODF model type

def _apply_odf_properties(df, headers, model):
    """
    Attach properties to the Dataframe to carry along ODF metadata

    :param df: The dataframe to be modified
    :param headers: The ODF header lines
    :param model: The ODF model type
    """
    df.headers = headers
    df.model = model