def list(
            self, resource_group_name, custom_headers={}, raw=False, **operation_config):
        """
        The list NetworkSecurityGroups returns all network security groups in
        a resource group

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: 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:`NetworkSecurityGroupPaged
         <azure.mgmt.network.models.NetworkSecurityGroupPaged>`
        """
        def internal_paging(next_link=None, raw=False):

            if not next_link:
                # Construct URL
                url = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/networkSecurityGroups'
                path_format_arguments = {
                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
                    'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str')
                }
                url = self._client.format_url(url, **path_format_arguments)

                # Construct parameters
                query_parameters = {}
                query_parameters['api-version'] = self._serialize.query("self.config.api_version", self.config.api_version, 'str')

            else:
                url = next_link
                query_parameters = {}

            # Construct headers
            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')

            # Construct and send request
            request = self._client.get(url, query_parameters)
            response = self._client.send(
                request, header_parameters, **operation_config)

            if response.status_code not in [200]:
                exp = CloudError(response)
                exp.request_id = response.headers.get('x-ms-request-id')
                raise exp

            return response

        # Deserialize response
        deserialized = models.NetworkSecurityGroupPaged(internal_paging, self._deserialize.dependencies)

        if raw:
            header_dict = {}
            client_raw_response = models.NetworkSecurityGroupPaged(internal_paging, self._deserialize.dependencies, header_dict)
            return client_raw_response

        return deserialized
dataset/ETHPy150Open Azure/azure-sdk-for-python/azure-mgmt-network/azure/mgmt/network/operations/network_security_groups_operations.py/NetworkSecurityGroupsOperations.list/original