Why go with R6 annotation when you have improvised R7 annotation.OSGI R7 annotation comes with significant feature and capabilities and is available to use with AEM from AEM 6.4 onwards.
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By Feike Visser
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Good to see you sharing the content with the Community. Please keep doing this.
Unfortunately the link is broken (404). I wasn't able to find Feikes Articles in any other location. The best alternative content/introduction on OSGI R7 annotations I could find is this one:https://helpx.adobe.com/experience-manager/kt/eseminars/gems/Using-OSGi-R7-in-AEM.html
@markus_bulla_adobe , thank you for sharing the link. Keep on assisting others in the AEM community. Looking forward to see you more here.