Spring RuntimeBeanReference

	/**
	 * beanName
	 */
	private final String beanName;

	/**
	 * bean 类型
	 */
	@Nullable
	private final Class<?> beanType;

	/**
	 * 是否走向父类
	 */
	private final boolean toParent;

	/**
	 * 源
	 */
	@Nullable
	private Object source;