diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMoreProject.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMoreProject.java
index c38fd81a6..85086a6df 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMoreProject.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMoreProject.java
@@ -25,7 +25,9 @@ public class EnrichMoreProject extends UpdateMatcher<OaBrokerProject> {
 	protected List<OaBrokerProject> findDifferences(final OaBrokerMainEntity source,
 		final OaBrokerMainEntity target) {
 
-		if (target.getProjects().size() >= BrokerConstants.MAX_LIST_SIZE) { return new ArrayList<>(); }
+		if (target.getProjects().size() >= BrokerConstants.MAX_LIST_SIZE) {
+			return new ArrayList<>();
+		}
 
 		final Set<String> existingProjects = target
 			.getProjects()
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/ConversionUtils.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/ConversionUtils.java
index 3a2cdc5f3..d00c5b817 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/ConversionUtils.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/ConversionUtils.java
@@ -44,7 +44,9 @@ public class ConversionUtils {
 	private static final Logger log = LoggerFactory.getLogger(ConversionUtils.class);
 
 	public static List<OaBrokerInstance> oafInstanceToBrokerInstances(final Instance i) {
-		if (i == null) { return new ArrayList<>(); }
+		if (i == null) {
+			return new ArrayList<>();
+		}
 
 		return mappedList(i.getUrl(), url -> {
 			final OaBrokerInstance res = new OaBrokerInstance();
@@ -65,7 +67,9 @@ public class ConversionUtils {
 	}
 
 	public static final OaBrokerRelatedDataset oafDatasetToBrokerDataset(final Dataset d) {
-		if (d == null) { return null; }
+		if (d == null) {
+			return null;
+		}
 
 		final OaBrokerRelatedDataset res = new OaBrokerRelatedDataset();
 		res.setOpenaireId(d.getId());
@@ -78,7 +82,9 @@ public class ConversionUtils {
 	}
 
 	public static OaBrokerRelatedPublication oafPublicationToBrokerPublication(final Publication p) {
-		if (p == null) { return null; }
+		if (p == null) {
+			return null;
+		}
 
 		final OaBrokerRelatedPublication res = new OaBrokerRelatedPublication();
 		res.setOpenaireId(p.getId());
@@ -92,7 +98,9 @@ public class ConversionUtils {
 	}
 
 	public static final OaBrokerMainEntity oafResultToBrokerResult(final Result result) {
-		if (result == null) { return null; }
+		if (result == null) {
+			return null;
+		}
 
 		final OaBrokerMainEntity res = new OaBrokerMainEntity();
 
@@ -109,7 +117,8 @@ public class ConversionUtils {
 		res.setEmbargoenddate(fieldValue(result.getEmbargoenddate()));
 		res.setContributor(fieldList(result.getContributor()));
 		res
-			.setJournal(result instanceof Publication ? oafJournalToBrokerJournal(((Publication) result).getJournal()) : null);
+			.setJournal(
+				result instanceof Publication ? oafJournalToBrokerJournal(((Publication) result).getJournal()) : null);
 		res.setCollectedFromId(mappedFirst(result.getCollectedfrom(), KeyValue::getKey));
 		res.setCollectedFromName(mappedFirst(result.getCollectedfrom(), KeyValue::getValue));
 		res.setPids(mappedList(result.getPid(), ConversionUtils::oafPidToBrokerPid));
@@ -121,7 +130,9 @@ public class ConversionUtils {
 	}
 
 	private static OaBrokerAuthor oafAuthorToBrokerAuthor(final Author author) {
-		if (author == null) { return null; }
+		if (author == null) {
+			return null;
+		}
 
 		final String pids = author.getPid() != null ? author
 			.getPid()
@@ -145,7 +156,9 @@ public class ConversionUtils {
 	}
 
 	private static OaBrokerJournal oafJournalToBrokerJournal(final Journal journal) {
-		if (journal == null) { return null; }
+		if (journal == null) {
+			return null;
+		}
 
 		final OaBrokerJournal res = new OaBrokerJournal();
 		res.setName(journal.getName());
@@ -157,7 +170,9 @@ public class ConversionUtils {
 	}
 
 	private static OaBrokerExternalReference oafExtRefToBrokerExtRef(final ExternalReference ref) {
-		if (ref == null) { return null; }
+		if (ref == null) {
+			return null;
+		}
 
 		final OaBrokerExternalReference res = new OaBrokerExternalReference();
 		res.setRefidentifier(ref.getRefidentifier());
@@ -168,7 +183,9 @@ public class ConversionUtils {
 	}
 
 	public static final OaBrokerProject oafProjectToBrokerProject(final Project p) {
-		if (p == null) { return null; }
+		if (p == null) {
+			return null;
+		}
 
 		final OaBrokerProject res = new OaBrokerProject();
 		res.setOpenaireId(p.getId());
@@ -192,7 +209,9 @@ public class ConversionUtils {
 	}
 
 	public static final OaBrokerRelatedSoftware oafSoftwareToBrokerSoftware(final Software sw) {
-		if (sw == null) { return null; }
+		if (sw == null) {
+			return null;
+		}
 
 		final OaBrokerRelatedSoftware res = new OaBrokerRelatedSoftware();
 		res.setOpenaireId(sw.getId());
@@ -255,7 +274,9 @@ public class ConversionUtils {
 	}
 
 	private static List<OaBrokerTypedValue> structPropTypedList(final List<StructuredProperty> list) {
-		if (list == null) { return new ArrayList<>(); }
+		if (list == null) {
+			return new ArrayList<>();
+		}
 
 		return list
 			.stream()
@@ -265,7 +286,9 @@ public class ConversionUtils {
 	}
 
 	private static <F, T> List<T> mappedList(final List<F> list, final Function<F, T> func) {
-		if (list == null) { return new ArrayList<>(); }
+		if (list == null) {
+			return new ArrayList<>();
+		}
 
 		return list
 			.stream()
@@ -276,7 +299,9 @@ public class ConversionUtils {
 	}
 
 	private static <F, T> List<T> flatMappedList(final List<F> list, final Function<F, List<T>> func) {
-		if (list == null) { return new ArrayList<>(); }
+		if (list == null) {
+			return new ArrayList<>();
+		}
 
 		return list
 			.stream()
@@ -288,7 +313,9 @@ public class ConversionUtils {
 	}
 
 	private static <F, T> T mappedFirst(final List<F> list, final Function<F, T> func) {
-		if (list == null) { return null; }
+		if (list == null) {
+			return null;
+		}
 
 		return list
 			.stream()