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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 create_vlan_interface(self, interface, subnet, **kwargs):
 """Create a vlan interface :param interface: Name of interface to be created. :type interface: str :param subnet: Subnet associated with interface to be created :type subnet: str :param \*\*kwargs: See the REST API Guide on your array for the documentation on the request: **POST network/vif/:vlan_interface** :type \*\*kwargs: optional :returns: A dictionary describing the created interface :rtype: ResponseDict .. note:: Requires use of REST API 1.5 or later. """

        data = {"subnet": subnet}
        data.update(kwargs)
        return self._request("POST", "network/vif/{0}".format(interface), data)