Always insert a placeholder institution.

src/main/kotlin/helpers/InstitutionAndRecordSetExtractionHelper.kt

@@ -30,7 +30,12 @@ object InstitutionAndRecordSetExtractionHelper {
     private val log = LogManager.getLogger("InstitutionAndRecordSetExtractionHelper")
 
     fun extractInstitution(record: JsonObject): List<FacetContainer> {
-        return extract(KEYS.heldBy, record)
+        val containers =  extract(KEYS.heldBy, record)
+        return if (containers.isNotEmpty()) {
+            containers
+        } else {
+            listOf(FacetContainer.placeholder("NoInstitutionInRecord"))
+        }
     }
 
     fun extractRecordSet(record: JsonObject): FacetContainer {