Switch to side-by-side view

--- a/metric-providers/org.ossmeter.metricprovider.trans.rascal.NOM/src/NOM.rsc
+++ b/metric-providers/org.ossmeter.metricprovider.trans.rascal.NOM/src/NOM.rsc
@@ -5,6 +5,7 @@
 import Map;
 import ValueIO;
 import IO;
+import analysis::m3::Core;
 import org::ossmeter::metricprovider::Manager;
 import org::ossmeter::metricprovider::ProjectDelta;