def METHOD_NAME(value: LocationSeries,
                   sensor: SensorConfig,
                   as_of_date: date,
                   receiving_dir: str
                   ) -> List[str]:
    """
    Save value to csv for upload to Epidata database.
    Parameters
    ----------
    value
        LocationSeries containing data.
    sensor
        SensorConfig corresponding to value.
    as_of_date
        As_of date for the indicator data used to train the sensor.
    receiving_dir
        Export directory for Epidata acquisition.
    Returns
    -------
        Filepath of exported files
    """
    export_dir = os.path.join(
        receiving_dir,
        f"issue_{as_of_date.strftime('%Y%m%d')}",
        sensor.source
    )
    os.makedirs(export_dir, exist_ok=True)
    exported_files = []
    for time_value in value.dates:
        export_file = os.path.join(
            export_dir,
            f"{time_value.strftime('%Y%m%d')}_{value.geo_type}_{sensor.signal}.csv"
        )
        if os.path.exists(export_file):
            with open(export_file, "a") as f:
                f.write(
                    f"{sensor.name},{value.geo_value},{value.data.get(time_value, '')}\n")
        else:
            with open(export_file, "a") as f:
                f.write("sensor_name,geo_value,value\n")
                f.write(
                    f"{sensor.name},{value.geo_value},{value.data.get(time_value, '')}\n")
        exported_files.append(export_file)
    return exported_files