import org.asamk.signal.util.Util;
import org.whispersystems.signalservice.api.util.InvalidNumberException;
import org.asamk.signal.util.Util;
import org.whispersystems.signalservice.api.util.InvalidNumberException;
try {
m.setContactBlocked(contact_number, false);
} catch (InvalidNumberException e) {
try {
m.setContactBlocked(contact_number, false);
} catch (InvalidNumberException e) {
m.setGroupBlocked(groupId, false);
} catch (GroupIdFormatException | GroupNotFoundException e) {
System.err.println(e.getMessage());
m.setGroupBlocked(groupId, false);
} catch (GroupIdFormatException | GroupNotFoundException e) {
System.err.println(e.getMessage());