Create an instance of :class:`Decimal128` from Binary Integer
        Decimal string.

        :Parameters:
          - `value`: 16 byte string (128-bit IEEE 754-2008 decimal floating
            point in Binary Integer Decimal (BID) format).

def from_bid(cls, value):
        """Create an instance of :class:`Decimal128` from Binary Integer
        Decimal string.

        :Parameters:
          - `value`: 16 byte string (128-bit IEEE 754-2008 decimal floating
            point in Binary Integer Decimal (BID) format).
        """
        if not isinstance(value, bytes):
            raise TypeError("value must be an instance of bytes")
        if len(value) != 16:
            raise ValueError("value must be exactly 16 bytes")
        return cls((_UNPACK_64(value[8:])[0], _UNPACK_64(value[:8])[0]))