Introduce a DEFAULT visibility to indicate unspecified #8213
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In jruby#8146 we saw that DelegateClass can be broken by JRuby extensions that do not explicitly set their initialize methods to Visibility.PRIVATE. This is an error-prone requirement as detailed in jruby#8210, since there's no indication that initialize is special and should always be private. This patch introduces a "DEFAULT" visibility to be the default for the annotation. When binding methods using annotation processing, the DEFAULT visibility will translate itself to PRIVATE for the initialize method and PUBLIC for other cases. This ensures that initialize is always set to PRIVATE if no other visibility is specified, avoiding the bug. If initialize is set to some other visibility, it will keep that visibility. Fixes jruby#8210
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In #8146 we saw that DelegateClass can be broken by JRuby extensions that do not explicitly set their initialize methods to Visibility.PRIVATE. This is an error-prone requirement as detailed in #8210, since there's no indication that initialize is special and should always be private.
This patch introduces a "DEFAULT" visibility to be the default for the annotation. When binding methods using annotation processing, the DEFAULT visibility will translate itself to PRIVATE for the initialize method and PUBLIC for other cases. This ensures that initialize is always set to PRIVATE if no other visibility is specified, avoiding the bug. If initialize is set to some other visibility, it will keep that visibility.
Fixes #8210