scala org.eclipse.ui.externaltools.ExternalToolBuilder full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/ch.epfl.lamp.sdt.core.scalabuilder.launch org.eclipse.ui.externaltools.ExternalToolBuilder full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/org.eclipse.pde.ManifestBuilder.launch org.eclipse.ui.externaltools.ExternalToolBuilder full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/org.eclipse.pde.SchemaBuilder.launch org.eclipse.pde.PluginNature ch.epfl.lamp.sdt.core.scalanature org.eclipse.jdt.core.javanature