AbstractBeanDefinition.getBeanClass() javadoc misleads about returning null

[olegz]

Current javadoc says:

/**
     * Return the class of the wrapped bean, if already resolved.
     * @return the bean class, or {@code null} if none defined
     * @throws IllegalStateException if the bean definition does not define a bean class,
     * or a specified bean class name has not been resolved into an actual Class
     */

The @return and @throws are contradictory as this method can not return null due to

if (beanClassObject == null) {
			throw new IllegalStateException("No bean class specified on bean definition");
}

[sbrannen]

Good point. We'll improve the documentation there.