mirna parser doesn't return duplicates when searching by target

annotation/src/main/java/lcsb/mapviewer/annotation/services/MiRNAParser.java

@@ -181,7 +181,7 @@ public class MiRNAParser extends CachableInterface implements IExternalService {
 	 * @throws MiRNASearchException
 	 *           thrown when there is a problem with accessing mirna database
 	 */
-	public List<MiRNA> getMiRnasByNames(List<String> names) throws MiRNASearchException {
+	public List<MiRNA> getMiRnasByNames(Collection<String> names) throws MiRNASearchException {
 		List<MiRNA> miRNAs = new ArrayList<>();
 		List<String> idsToRemove = new ArrayList<>();
 		MiRNA miRNA = null;
@@ -419,7 +419,7 @@ public class MiRNAParser extends CachableInterface implements IExternalService {
 	 *           thrown when there is a problem with accessing mirna database
 	 */
 	public List<MiRNA> getMiRnaListByTargets(Collection<MiriamData> targetsMiriam) throws MiRNASearchException {
-		List<String> mirnaNames = new ArrayList<>();
+		Set<String> mirnaNames = new HashSet<>();
 		Set<MiriamData> targets = new HashSet<>();
 		for (MiriamData miriamData : targetsMiriam) {
 			if (!MiriamType.HGNC_SYMBOL.equals(miriamData.getDataType()) && !MiriamType.ENTREZ.equals(miriamData.getDataType())) {