4.(Marketplace, search for Eclipse Xtext, install - this is pre-installed for Eclipse Modeling)
5. Install new Software -> Add -> SonarQube/SonarLint, http://eclipse.sonarlint.org/ -> install SonarLint for Eclipse (see more at https://www.sonarlint.org/eclipse/howto.html)
5. Install new Software -> Work with 'All available sites' -> search for 'maven' -> select 'm2e - Maven Integration for Eclipse (includes Incubating components)' -> install