def by_identity_user_flow_attribute_id(self,identity_user_flow_attribute_id: str) -> IdentityUserFlowAttributeItemRequestBuilder:
        """
        Gets an item from the msgraph.generated.identity.authenticationEventsFlows.item.graphExternalUsersSelfServiceSignUpEventsFlow.onAttributeCollection.graphOnAttributeCollectionExternalUsersSelfServiceSignUp.attributes.item collection
        param identity_user_flow_attribute_id: The unique identifier of identityUserFlowAttribute
        Returns: IdentityUserFlowAttributeItemRequestBuilder
        """
        if identity_user_flow_attribute_id is None:
            raise TypeError("identity_user_flow_attribute_id cannot be null.")
        from .item.identity_user_flow_attribute_item_request_builder import IdentityUserFlowAttributeItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["identityUserFlowAttribute%2Did"] = identity_user_flow_attribute_id
        return IdentityUserFlowAttributeItemRequestBuilder(self.request_adapter, url_tpl_params)

        Gets an item from the msgraph.generated.identity.authenticationEventsFlows.item.graphExternalUsersSelfServiceSignUpEventsFlow.onAttributeCollection.graphOnAttributeCollectionExternalUsersSelfServiceSignUp.attributes.item collection
        param identity_user_flow_attribute_id: The unique identifier of identityUserFlowAttribute
        Returns: IdentityUserFlowAttributeItemRequestBuilder
        
msgraph/generated/identity/authentication_events_flows/item/graph_external_users_self_service_sign_up_events_flow/on_attribute_collection/graph_on_attribute_collection_external_users_self_service_sign_up/attributes/attributes_request_builder.py