@staticmethod
def _extract_hidden_data(dom):
    """
        Extracts hidden input data from DOM and returns the data as dictionary.
        """
    input_tags = dom.find_all('input', attrs={'type': 'hidden'})
    data = {}
    for input_tag in input_tags:
        data[input_tag['name']] = input_tag['value']
    return data
