Advanced Configuration
RabbitMQ 团队会不时添加一些新功能，通过在声明时（例如，队列）设置一些参数来启用这些新功能。通常，在绑定程序中通过添加适当的属性来启用此类功能，但这可能不会在当前版本中立即可用。从 3.0.1 版开始，您现在可以将 DeclarableCustomizer bean 添加到应用程序上下文中，以便在执行声明之前修改 Declarable（Queue、Exchange 或 Binding）。这能让您添加当前未受绑定程序直接支持的参数。
From time to time, the RabbitMQ team add new features that are enabled by setting some argument when declaring, for example, a queue.
Generally, such features are enabled in the binder by adding appropriate properties, but this may not be immediately available in a current version.
Starting with version 3.0.1, you can now add DeclarableCustomizer bean(s) to the application context to modify a Declarable (Queue, Exchange or Binding) just before the declaration is performed.
This allows you to add arguments that are not currently directly supported by the binder.