Switch empty output verification to modeling level verification

dmnverifierapi/src/main/java/de/unikoblenz/fgbks/core/dmn/verification/verifier/types/EmptyOutputVerification.java

@@ -3,7 +3,7 @@ package de.unikoblenz.fgbks.core.dmn.verification.verifier.types;
 import de.unikoblenz.fgbks.base.domain.Description;
 import de.unikoblenz.fgbks.base.domain.Name;
 import de.unikoblenz.fgbks.core.dmn.verification.verifier.classification.ClassificationType;
-import de.unikoblenz.fgbks.core.dmn.verification.verifier.classification.SyntaxLevelVerification;
+import de.unikoblenz.fgbks.core.dmn.verification.verifier.classification.ModelingLevelVerification;
 import javax.validation.constraints.NotNull;
 
 @Type
@@ -21,6 +21,6 @@ public class EmptyOutputVerification extends AbstractVerificationType {
 
   @Override
   public @NotNull ClassificationType getClassification() {
-    return SyntaxLevelVerification.getInstance();
+    return ModelingLevelVerification.getInstance();
   }
 }