org.kohsuke.stapler.idea.I18nRefactorAction which corresponds to i18n for Stapler refactoring action. Is a fully custom action that relies on APIs from Properties plugins.
Instead of doing it all by hand, it might be possible to extend com.intellij.java-i18n.i18nizeHandlerProvider, which is java-i18n extension point.
Things to take care of:
- Figure out how I18n refactor dialog is customized
- Add a template for Maven Localizer?