h2. Migrating your component runtime

h2. Migrating your component unit test

Please apply the following changes in the unit tests oy your custom component:
* JUnit 5 is now required for your unit tests,
* move Java EE package to Jakarta EE 9+ package:
** {{javax.activation}} -> {{jakarta.activation}}
** {{javax.mail}} -> {{jakarta.mail}}
** {{javax.xml.bind}} -> {{jakarta.xml.bind}}
** ...

h2. Migrating your component runtime

Please apply the following changes in the source code of your custom component:
* Placeholders are no more defined through {{Properties}} but through {{Placeholders}}.