anchor.diff:  As of Spring Framework 4.3, an `@Autowired` annotation on such a constructor is
   no longer necessary if the target bean defines only one constructor to begin with.
   However, if several constructors are available, at least one must be annotated to
  -teach the container which one to use.
  +instruct the container which one to use.
   ====
   
  -You can also apply the `@Autowired` annotation to "`traditional`" setter
  -methods, as the following example shows:
  +You can also apply the `@Autowired` annotation to _traditional_ setter methods,
  +as the following example shows:
   
   [source,java,indent=0]
   [subs="verbatim,quotes"]
  
positive.code: and accessing a `MessageSource`. These additional features are described in
  <<context-introduction>>.
  
  As of Spring 2.5, autowiring is another alternative to obtain a reference to the
  `ApplicationContext`. The "`traditional`" `constructor` and `byType` autowiring modes
  (as described in <<beans-factory-autowire>>) can provide a dependency of type
  `ApplicationContext` for a constructor argument or a setter method parameter,
  respectively. For more flexibility, including the ability to autowire fields and
  multiple parameter methods, use the new annotation-based autowiring features. If you do,
  the `ApplicationContext` is autowired into a field, constructor argument, or method
  parameter that expects the `ApplicationContext` type if the field, constructor, or
  method in question carries the `@Autowired` annotation. For more information, see
  
negative.code: can use `@Resource`, which may obtain a proxy back to the current bean by its unique name.
  
  `@Autowired` applies to fields, constructors, and multi-argument methods, allowing for
  narrowing through qualifier annotations at the parameter level. In contrast, `@Resource`
  is supported only for fields and bean property setter methods with a single argument.
  As a consequence, you should stick with qualifiers if your injection target is a constructor or a
  multi-argument method.
  