Convert the type if necessary and return if a conversion happened.

def _convert(self, val):
        """ Convert the type if necessary and return if a conversion happened. """
        if isinstance(val, dict) and not isinstance(val, DotDict):
            return DotDict(val), True
        elif isinstance(val, list) and not isinstance(val, DotList):
            return DotList(val), True

        return val, False