throw new DIException("Circular references: " + current);
        }
        doBindImplicit(key, binding);
        Class<?> cls = key.getRawType().getSuperclass();
        while (cls != Object.class && cls != null) {
            key = Key.of(cls, key.getQualifier());
            doBindImplicit(key, binding);
            cls = cls.getSuperclass();
        }
        current.remove(key);