anchor.diff:  
   In the above example, the `-x` and `-y` options are added to the other options of the `doit` command.
   
  +[#spec-annotation]
   === `@Spec` Annotation
   Picocli 3.2 introduces a `@Spec` annotation for injecting the `CommandSpec` model of the command into a command field.
   
  
positive.code: Picocli's <<Mixin Standard Help Options,mixinStandardHelpOptions>> internally uses a mixin.
  
  A mixin is a separate class with options, positional parameters, subcommands and command attributes that you want to reuse in one or more other commands.
  A command receiving these mixed in options, positional parameters, and command attributes is called a "mixee".
  
  Mixins can be installed declaratively with a `@Mixin`-annotated field (or a `@Mixin`-annotated method parameter for command methods).
  Alternatively, mixins can be installed programmatically by calling the `CommandLine.addMixin` method with an instance of the mixin class.
  
negative.code: }
  ----
  
  [#mixin-annotation]
  ==== `@Mixin` Annotation
  A command defined in a class can include a mixin by annotating a field with `@Mixin`.
  Similarly, a <<Subcommands as Methods,`@Command`-annotated method>> can include a mixin by declaring a `@Mixin`-annotated method parameter.
  All picocli annotations found in the mixin class are added to the command (the "mixee").
  For example:
  
  