{"ast_node_type":"import","tokens":[{"end":73,"kind":"keyword","start":0,"text":"//"}]}
        // (and we hope this does not confuse the FnAbi checks too much).
        // In case of replacement, we return the *original* instance to make backtraces work out
        interp_ok(Some((ecx.load_mir(instance.def, None)?, orig_instance)))