def METHOD_NAME(path, key, conf=_config):
    """Accumulate the values of 'key' along 'path'"""
    result = []
    try:
        if key in conf:
            value = conf[key]
            if value:
                result.extend(value)
        for p in path:
            conf = conf[p]
            if key in conf:
                value = conf[key]
                if value:
                    result[:0] = value
    except Exception:
        pass
    return result