==== Programmatic Model
ifndef::snippets[:snippets: ../../test/java/org/springframework/shell/docs]

In the programmatic model, `CommandRegistration` can be defined as a `@Bean`
and it will be automatically registered.

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[source, java, indent=0]
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include::{snippets}/CommandRegistrationBeanSnippets.java[tag=plain]
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====

If all your commands have something in common, an instance of
a _Supplier<CommandRegistration.Builder>_ is created which can
be autowired. Default implementation of this supplier returns
a new builder so you don't need to worry about its internal state.

IMPORTANT: Commands registered programmatically automatically
add _help options_ mentioned in <<commands-helpoptions>>.

If bean of this supplier type is defined then auto-configuration
will back off giving you an option to redefine default functionality.

====
[source, java, indent=0]
----
include::{snippets}/CommandRegistrationBeanSnippets.java[tag=fromsupplier]
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====

`CommandRegistrationCustomizer` beans can be defined if you want to centrally
modify builder instance given you by supplier mentioned above.

====
[source, java, indent=0]
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include::{snippets}/CommandRegistrationBeanSnippets.java[tag=customizer]
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====