def custom_extension_stage_settings(self) -> CustomExtensionStageSettingsRequestBuilder:
        """
        Provides operations to manage the customExtensionStageSettings property of the microsoft.graph.accessPackageAssignmentPolicy entity.
        """
        from .custom_extension_stage_settings.custom_extension_stage_settings_request_builder import CustomExtensionStageSettingsRequestBuilder

        return CustomExtensionStageSettingsRequestBuilder(self.request_adapter, self.path_parameters)

        Provides operations to manage the customExtensionStageSettings property of the microsoft.graph.accessPackageAssignmentPolicy entity.
        
msgraph/generated/identity_governance/entitlement_management/access_packages/item/assignment_policies/item/access_package_assignment_policy_item_request_builder.py