Set the PVLAN type (primary, isolated, community).

        Args:
            name (str): VLAN ID.
            pvlan_type (str): PVLAN type (primary, isolated, community)
            callback (function): A function executed upon completion of the
                method.  The only parameter passed to `callback` will be the
                ``ElementTree`` `config`.

        Returns:
            Return value of `callback`.

        Raises:
            KeyError: if `name` or `pvlan_type` is not specified.
            ValueError: if `name` or `pvlan_type` is invalid.

        Examples:
            >>> import pynos.device
            >>> switches = ['10.24.39.211', '10.24.39.203']
            >>> auth = ('admin', 'password')
            >>> name = '90'
            >>> pvlan_type = 'isolated'
            >>> for switch in switches:
            ...     conn = (switch, '22')
            ...     with pynos.device.Device(conn=conn, auth=auth) as dev:
            ...         output = dev.interface.private_vlan_type(name=name,
            ...         pvlan_type=pvlan_type)
            ...         dev.interface.private_vlan_type()
            ...         # doctest: +IGNORE_EXCEPTION_DETAIL
            Traceback (most recent call last):
            KeyError

def private_vlan_type(self, **kwargs):
        """Set the PVLAN type (primary, isolated, community).

        Args:
            name (str): VLAN ID.
            pvlan_type (str): PVLAN type (primary, isolated, community)
            callback (function): A function executed upon completion of the
                method.  The only parameter passed to `callback` will be the
                ``ElementTree`` `config`.

        Returns:
            Return value of `callback`.

        Raises:
            KeyError: if `name` or `pvlan_type` is not specified.
            ValueError: if `name` or `pvlan_type` is invalid.

        Examples:
            >>> import pynos.device
            >>> switches = ['10.24.39.211', '10.24.39.203']
            >>> auth = ('admin', 'password')
            >>> name = '90'
            >>> pvlan_type = 'isolated'
            >>> for switch in switches:
            ...     conn = (switch, '22')
            ...     with pynos.device.Device(conn=conn, auth=auth) as dev:
            ...         output = dev.interface.private_vlan_type(name=name,
            ...         pvlan_type=pvlan_type)
            ...         dev.interface.private_vlan_type()
            ...         # doctest: +IGNORE_EXCEPTION_DETAIL
            Traceback (most recent call last):
            KeyError
        """
        name = kwargs.pop('name')
        pvlan_type = kwargs.pop('pvlan_type')
        callback = kwargs.pop('callback', self._callback)
        allowed_pvlan_types = ['isolated', 'primary', 'community']

        if not pynos.utilities.valid_vlan_id(name):
            raise InvalidVlanId("Incorrect name value.")

        if pvlan_type not in allowed_pvlan_types:
            raise ValueError("Incorrect pvlan_type")

        pvlan_args = dict(name=name, pvlan_type_leaf=pvlan_type)
        pvlan_type = getattr(self._interface,
                             'interface_vlan_interface_vlan_'
                             'private_vlan_pvlan_type_leaf')
        config = pvlan_type(**pvlan_args)
        return callback(config)