diff --git a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/dump/GenerateJsonSchema.java b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/dump/GenerateJsonSchema.java
index ba4bac45b..9c02ea5f4 100644
--- a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/dump/GenerateJsonSchema.java
+++ b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/dump/GenerateJsonSchema.java
@@ -1,22 +1,26 @@
+
 package eu.dnetlib.dhp.oa.graph.dump;
 
+import org.junit.jupiter.api.Test;
+
 import com.fasterxml.jackson.databind.JsonNode;
 import com.github.victools.jsonschema.generator.*;
+
 import eu.dnetlib.dhp.schema.dump.oaf.Result;
-import org.junit.jupiter.api.Test;
 
 public class GenerateJsonSchema {
 
-    @Test
-    public void generateSchema(){
-    SchemaGeneratorConfigBuilder configBuilder = new SchemaGeneratorConfigBuilder(SchemaVersion.DRAFT_7, OptionPreset.PLAIN_JSON)
-            .with(Option.SCHEMA_VERSION_INDICATOR)
-            .without(Option.NONPUBLIC_NONSTATIC_FIELDS_WITHOUT_GETTERS);
-    configBuilder.forFields().withDescriptionResolver(field -> "Description of "+field.getDeclaredName());
-    SchemaGeneratorConfig config = configBuilder.build();
-    SchemaGenerator generator = new SchemaGenerator(config);
-    JsonNode jsonSchema = generator.generateSchema(Result.class);
+	@Test
+	public void generateSchema() {
+		SchemaGeneratorConfigBuilder configBuilder = new SchemaGeneratorConfigBuilder(SchemaVersion.DRAFT_7,
+			OptionPreset.PLAIN_JSON)
+				.with(Option.SCHEMA_VERSION_INDICATOR)
+				.without(Option.NONPUBLIC_NONSTATIC_FIELDS_WITHOUT_GETTERS);
+		configBuilder.forFields().withDescriptionResolver(field -> "Description of " + field.getDeclaredName());
+		SchemaGeneratorConfig config = configBuilder.build();
+		SchemaGenerator generator = new SchemaGenerator(config);
+		JsonNode jsonSchema = generator.generateSchema(Result.class);
 
-    System.out.println(jsonSchema.toString());
-}
+		System.out.println(jsonSchema.toString());
+	}
 }