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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def validate_wrap(self, value):
        ''' Checks that ``value`` is a pymongo ``ObjectId`` or a string
            representation of one'''
        if (not isinstance(value, ObjectId)
                and not isinstance(value, basestring)
                and not isinstance(value, bytes)
            ):
            self._fail_validation_type(value, ObjectId)
        if isinstance(value, ObjectId):
            return
        #: bytes
        if len(value) == 12:
            return
        # hex
        if len(value) != 24:
            self._fail_validation(value, 'hex object ID is the wrong length')