def by_custom_task_extension_id(self,custom_task_extension_id: str) -> CustomTaskExtensionItemRequestBuilder:
        """
        Provides operations to manage the customTaskExtensions property of the microsoft.graph.identityGovernance.lifecycleWorkflowsContainer entity.
        param custom_task_extension_id: The unique identifier of customTaskExtension
        Returns: CustomTaskExtensionItemRequestBuilder
        """
        if custom_task_extension_id is None:
            raise TypeError("custom_task_extension_id cannot be null.")
        from .item.custom_task_extension_item_request_builder import CustomTaskExtensionItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["customTaskExtension%2Did"] = custom_task_extension_id
        return CustomTaskExtensionItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the customTaskExtensions property of the microsoft.graph.identityGovernance.lifecycleWorkflowsContainer entity.
        param custom_task_extension_id: The unique identifier of customTaskExtension
        Returns: CustomTaskExtensionItemRequestBuilder
        
msgraph/generated/identity_governance/lifecycle_workflows/custom_task_extensions/custom_task_extensions_request_builder.py