import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;
-import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.tuple.ImmutablePair;
import org.openecomp.sdc.be.model.DataTypeDefinition;
import org.openecomp.sdc.be.model.PropertyDefinition;