def retrieve(self, id) :
        """
        Retrieve a single contact

        Returns a single contact available to the user, according to the unique contact ID provided
        If the specified contact does not exist, the request will return an error

        :calls: ``get /contacts/{id}``
        :param int id: Unique identifier of a Contact.
        :return: Dictionary that support attriubte-style access and represent Contact resource.
        :rtype: dict
        """

        _, _, contact = self.http_client.get("/contacts/{id}".format(id=id))
        return contact