def METHOD_NAME(entity):
    """
    Search for NGSIv2-style location, i.e. a "geo:point" attribute in the given entity.
    :param entity: the entity in which search location
    :return: the attribute which holds location, 'None' if no one was found
    """
    for field in entity:
        if field == 'id' or field == 'type':
            continue
        if entity[field]['type'] == 'geo:point':
            return field
    return None