The plugin that is inspected in this article is now delisted in the Eclipse Marketplace. You can't download it from there anymore (Checked with STS 3.9.0.RELEASE). A new fork without the ad related code as been publish and you can inspect the code on https://github.com/ecd-plugin/ecd .
It's nice to see the community stepping in to "fix" the situation.
It's nice to see the community stepping in to "fix" the situation.