def METHOD_NAME(path, hashobj, conn=None):
    """
    Get the hexdigest hash value of a file
    """
    if os.path.isdir(path):
        return ""
    with salt.utils.files.fopen(path, "r") as f:
        hashobj.update(salt.utils.stringutils.to_bytes(f.read()))
        return hashobj.hexdigest()