'Creates a new device identity in the identity registry of an IoT Hub.
Creates a new device identity in the identity registry of an IoT Hub.
:param device_id: Device Id.
:type device_id: str
:param device_description: request.
:type device_description: :class:`DeviceDescription
<iothubdeviceclient.models.DeviceDescription>`
:param if_match: Specify the ETag for the device identity.
:type if_match: str
:param dict custom_headers: headers that will be added to the request
:param bool raw: returns the direct response alongside the
deserialized response
:param operation_config: :ref:`Operation configuration
overrides<msrest:optionsforoperations>`.
:rtype: :class:`DeviceDescription
<iothubdeviceclient.models.DeviceDescription>`
:rtype: :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>`
if raw=true'

def create_or_update(self, device_id, device_description, if_match='*', custom_headers=None, raw=False, **operation_config):

    url = '/devices/{deviceId}'
    path_format_arguments = {'deviceId': self._serialize.url('device_id', device_id, 'str', max_length=128, min_length=1)}
    url = self._client.format_url(url, **path_format_arguments)
    query_parameters = {}
    query_parameters['api-version'] = self._serialize.query('self.config.api_version', self.config.api_version, 'str')
    header_parameters = {}
    header_parameters['Content-Type'] = 'application/json;    charset=utf-8'
    if self.config.generate_client_request_id:
        header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
    if custom_headers:
        header_parameters.update(custom_headers)
    if (if_match is not None):
        header_parameters['If-Match'] = self._serialize.header('if_match', if_match, 'str')
    if (self.config.accept_language is not None):
        header_parameters['accept-language'] = self._serialize.header('self.config.accept_language', self.config.accept_language, 'str')
    body_content = self._serialize.body(device_description, 'DeviceDescription')
    request = self._client.put(url, query_parameters)
    response = self._client.send(request, header_parameters, body_content, **operation_config)
    if (response.status_code not in [200, 201]):
        raise models.ErrorDetailsException(self._deserialize, response)
    deserialized = None
    if (response.status_code == 200):
        deserialized = self._deserialize('DeviceDescription', response)
    if (response.status_code == 201):
        deserialized = self._deserialize('DeviceDescription', response)
    if raw:
        client_raw_response = ClientRawResponse(deserialized, response)
        return client_raw_response
    return deserialized
