'Creates or updates a management node.
:param resource_group_name: The resource group name uniquely
identifies the resource group within the user subscriptionId.
:type resource_group_name: str
:param node_name: The node name (256 characters maximum).
:type node_name: str
:param location: Location of the resource.
:type location: str
:param tags: Resource tags.
:type tags: object
:param gateway_id: Gateway ID which will manage this node.
:type gateway_id: str
:param connection_name: myhost.domain.com
:type connection_name: str
:param user_name: User name to be used to connect to node.
:type user_name: str
:param password: Password associated with user name.
:type password: str
:param dict custom_headers: headers that will be added to the request
:param bool raw: returns the direct response alongside the
deserialized response
:rtype:
:class:`AzureOperationPoller<msrestazure.azure_operation.AzureOperationPoller>`
instance that returns :class:`NodeResource
<azure.mgmt.servermanager.models.NodeResource>`
:rtype: :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>`
if raw=true
:raises:
:class:`ErrorException<azure.mgmt.servermanager.models.ErrorException>`'

def create(self, resource_group_name, node_name, location=None, tags=None, gateway_id=None, connection_name=None, user_name=None, password=None, custom_headers=None, raw=False, **operation_config):

    gateway_parameters = models.NodeParameters(location=location, tags=tags, gateway_id=gateway_id, connection_name=connection_name, user_name=user_name, password=password)
    url = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ServerManagement/nodes/{nodeName}'
    path_format_arguments = {'subscriptionId': self._serialize.url('self.config.subscription_id', self.config.subscription_id, 'str'), 'resourceGroupName': self._serialize.url('resource_group_name', resource_group_name, 'str', min_length=3, pattern='[a-zA-Z0-9]+'), 'nodeName': self._serialize.url('node_name', node_name, 'str', max_length=256, min_length=1, pattern='^[a-zA-Z0-9][a-zA-Z0-9_.-]*$')}
    url = self._client.format_url(url, **path_format_arguments)
    query_parameters = {}
    query_parameters['api-version'] = self._serialize.query('self.api_version', self.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 (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(gateway_parameters, 'NodeParameters')
    def long_running_send():
        request = self._client.put(url, query_parameters)
        return self._client.send(request, header_parameters, body_content, **operation_config)
    def get_long_running_status(status_link, headers=None):
        request = self._client.get(status_link)
        if headers:
            request.headers.update(headers)
        return self._client.send(request, header_parameters, **operation_config)
    def get_long_running_output(response):
        if (response.status_code not in [200, 201, 202]):
            raise models.ErrorException(self._deserialize, response)
        deserialized = None
        if (response.status_code == 200):
            deserialized = self._deserialize('NodeResource', response)
        if (response.status_code == 201):
            deserialized = self._deserialize('NodeResource', response)
        if raw:
            client_raw_response = ClientRawResponse(deserialized, response)
            return client_raw_response
        return deserialized
    if raw:
        response = long_running_send()
        return get_long_running_output(response)
    long_running_operation_timeout = operation_config.get('long_running_operation_timeout', self.config.long_running_operation_timeout)
    return AzureOperationPoller(long_running_send, get_long_running_output, get_long_running_status, long_running_operation_timeout)
