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

     * 'rootObject.getChild().isName()' for boolean properties.
     */
    public static class ObjectBasedValueSource extends AbstractValueSource {

        private final Object root;

        /**
         * Construct a new value source, using the supplied object as the root from
         * which to start, and using expressions split at the dot ('.') to navigate
         * the object graph beneath this root.