def process(proc_data):
    """
    Final processing to conform to the schema.

    Parameters:

        proc_data:   (dictionary) raw structured data to process

    Returns:

        List of dictionaries. Structured data with the following schema:

        [
          {
            "group_name":       string,
            "password":         string,
            "administrators": [
                                string
            ],
            "members": [
                                string
            ]
          }
        ]
    """
    for entry in proc_data:
        if entry['administrators'] == ['']:
            entry['administrators'] = []
        if entry['members'] == ['']:
            entry['members'] = []
    return proc_data
