import java.util.Arrays;
import java.util.Collections;
import java.util.Optional;
-import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang3.StringUtils;
import org.openecomp.sdc.be.components.impl.exceptions.BusinessLogicException;
import org.openecomp.sdc.be.components.impl.utils.NodeFilterConstraintAction;
import org.openecomp.sdc.be.components.validation.NodeFilterValidator;