ming variant shall return an object that will be propagated
            as decode() return value as 1st item, and the remainig payload for further
            decode passes as 2nd item.
            The streaming variant shall yield an object that will be propagated as
            decode() return value, and leave the remaining payload in the stream.

        Returns
        -------
        : :py:class:`tuple`
            A tuple of :py:class:`~pyasn1.type.base.PyAsn1Item` object
            recovered from BER/CER/DER substrate and the unprocessed trailing
            portion of the `substrate` (may be empty)

        Raises
        ------
        : :py:class:`~pyasn1.error.PyAsn1Error`
            :py:class:`~pyasn1.error.SubstrateUnderrunError` on insufficient
            input or :py:class:`~pyasn1.error.PyAsn1Error` on decoding error.

        Examples
        --------
        Decode BER/CER/DER serialisation without ASN.1 schema

        .. code-block:: pycon

           >>> s, unprocessed = decode(b'0