How to use the azure-mgmt-storage.azure.mgmt.storage.v2018_07_01.models function in azure-mgmt-storage

request = self._client.get(url, query_parameters, header_parameters)
            response = self._client.send(request, stream=False, **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.StorageAccountPaged(internal_paging, self._deserialize.dependencies)

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

        return deserialized
    list.metadata = {'url': '/subscriptions/{subscriptionId}/providers/Microsoft.Storage/storageAccounts'}

request = self._client.get(url, query_parameters, header_parameters)
            response = self._client.send(request, stream=False, **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.StorageAccountPaged(internal_paging, self._deserialize.dependencies)

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

        return deserialized
    list_by_resource_group.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Storage/storageAccounts'}

def __init__(
            self, credentials, subscription_id, base_url=None):

        self.config = StorageManagementClientConfiguration(credentials, subscription_id, base_url)
        super(StorageManagementClient, self).__init__(self.config.credentials, self.config)

        client_models = {k: v for k, v in models.__dict__.items() if isinstance(v, type)}
        self._serialize = Serializer(client_models)
        self._deserialize = Deserializer(client_models)

        self.operations = Operations(
            self._client, self.config, self._serialize, self._deserialize)
        self.skus = SkusOperations(
            self._client, self.config, self._serialize, self._deserialize)
        self.storage_accounts = StorageAccountsOperations(
            self._client, self.config, self._serialize, self._deserialize)
        self.usages = UsagesOperations(
            self._client, self.config, self._serialize, self._deserialize)
        self.blob_services = BlobServicesOperations(
            self._client, self.config, self._serialize, self._deserialize)
        self.blob_containers = BlobContainersOperations(
            self._client, self.config, self._serialize, self._deserialize)
        self.management_policies = ManagementPoliciesOperations(

use.

        :param name: The storage account name.
        :type 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`.
        :return: CheckNameAvailabilityResult or ClientRawResponse if raw=true
        :rtype:
         ~azure.mgmt.storage.v2018_07_01.models.CheckNameAvailabilityResult or
         ~msrest.pipeline.ClientRawResponse
        :raises: :class:`CloudError`
        """
        account_name = models.StorageAccountCheckNameAvailabilityParameters(name=name)

        # Construct URL
        url = self.check_name_availability.metadata['url']
        path_format_arguments = {
            'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str', min_length=1)
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}
        query_parameters['api-version'] = self._serialize.query("self.api_version", self.api_version, 'str', min_length=1)

        # Construct headers
        header_parameters = {}
        header_parameters['Accept'] = 'application/json'
        header_parameters['Content-Type'] = 'application/json; charset=utf-8'

only if the immutability policy already exists. If omitted, this
         operation will always be applied.
        :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`.
        :return: ImmutabilityPolicy or ClientRawResponse if raw=true
        :rtype: ~azure.mgmt.storage.v2018_07_01.models.ImmutabilityPolicy or
         ~msrest.pipeline.ClientRawResponse
        :raises: :class:`CloudError`
        """
        parameters = None
        if immutability_period_since_creation_in_days is not None:
            parameters = models.ImmutabilityPolicy(immutability_period_since_creation_in_days=immutability_period_since_creation_in_days)

        # Construct URL
        url = self.create_or_update_immutability_policy.metadata['url']
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
            'accountName': self._serialize.url("account_name", account_name, 'str', max_length=24, min_length=3),
            'containerName': self._serialize.url("container_name", container_name, 'str', max_length=63, min_length=3),
            'immutabilityPolicyName': self._serialize.url("self.immutability_policy_name", self.immutability_policy_name, 'str'),
            'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str', min_length=1)
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}
        query_parameters['api-version'] = self._serialize.query("self.api_version", self.api_version, 'str', min_length=1)