import java.io.IOException;
import java.util.ArrayList;
-import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
public List<String> getGroupMembers(final byte[] groupId) {
GroupInfo group = m.getGroup(GroupId.unknownVersion(groupId));
if (group == null) {
- return Collections.emptyList();
+ return List.of();
} else {
return group.getMembers()
.stream()