APNs library uses Spring Bundlor plugin to generate MANIFEST.MF for OSGi usage.

Yet, this plugin has issues:

• It is not maintained for some time
• It exports packages that are not available in runtime
• It is proprietary, requires Springsource repositories

The plugin can be replaced with maven-bundle-plugin, which is able to generate OSGi compatible manifest as well, it is maintained and available in Maven Central.