// ignore
                    e.printStackTrace();
                }
                throw new DIException("No binding to construct an instance for key "
                        + key.getDisplayString() + ".  Existing bindings:\n"
                        + getBoundKeys().stream()
                                .map(Key::toString)
                                .map(String::trim)

                //noinspection unchecked
                return () -> (Q) map(map);
            }
        }
        throw new DIException("No binding to construct an instance for key "
                + key.getDisplayString() + ".  Existing bindings:\n"
                + getBoundKeys().stream()
                        .map(Key::toString)
                        .map(String::trim)
                        .sorted()