question: create a terminal `` no-op router '' that accepts any input context and returns the unchanged request and an empty continuation iterator . concode_field_sep Endpoint endpoint concode_elem_sep Router IDENTITY_ROUTER concode_field_sep Router endpoint concode_elem_sep Endpoint extractEndpoint concode_elem_sep Continuation apply concode_elem_sep Continuation apply
target: Router function ( ) { return IDENTITY_ROUTER ; }