How to use org.jboss.aerogear.simplepush.util

public UnregisterResponseImpl(final String channelId, final Status status) {
  super(channelId);
  checkNotNull(status, "status");
  this.status = status;
}

public DefaultChannel(final String uaid, final String channelId, final long version, final String endpointToken) {
  checkNotNull(uaid, "uaid");
  checkNotNull(channelId, "channelId");
  checkNotNegative(version, "version");
  checkNotNull(endpointToken, "endpointToken");
  this.uaid = uaid;
  this.channelId = channelId;
  this.version = version;
  this.endpointToken = endpointToken;
}

public NotificationMessageImpl(final Set<Ack> acks) {
  checkNotNullAndNotEmpty(acks, "acks");
  this.acks = acks;
}

public HelloMessageImpl(final String uaid, final Set<String> channelIds) {
  if (nullOrEmpty(uaid)) {
    this.uaid = newUAID();
    this.channelIds = Collections.emptySet();
  } else {
    this.channelIds = channelIds;
    this.uaid = fromString(uaid);
  }
}

private String generateEndpointToken(final String uaid, final String channelId) {
  return CryptoUtil.endpointToken(uaid, channelId, privateKey);
}

public UnregisterResponseImpl(final String channelId, final Status status) {
  super(channelId);
  checkNotNull(status, "status");
  this.status = status;
}

public PingMessageImpl(final String body) {
  ArgumentUtil.checkNotNullAndNotEmpty(body, "body");
  this.body = body;
}

private String generateEndpointToken(final String uaid, final String channelId) {
  return CryptoUtil.endpointToken(uaid, channelId, privateKey);
}

public AckImpl(final String channelId, final long version) {
  checkNotNull(channelId, "channelId");
  checkNotNull(version, "version");
  this.channelId = channelId;
  this.version = version;
}

public PingMessageImpl(final String body) {
  ArgumentUtil.checkNotNullAndNotEmpty(body, "body");
  this.body = body;
}

public RegisterResponseImpl(final String channelId, final Status status, final String pushEndpoint) {
  super(channelId);
  checkNotNull(status, "status");
  checkNotNull(pushEndpoint, "pushEndpoint");
  this.status = status;
  this.pushEndpoint = pushEndpoint;
}

public NotificationMessageImpl(final Set<Ack> acks) {
  checkNotNullAndNotEmpty(acks, "acks");
  this.acks = acks;
}

public HelloResponseImpl(final String uaid) {
  checkNotNull(uaid, "uaid");
  this.uaid = uaid;
}

public AckImpl(final String channelId, final long version) {
  checkNotNull(channelId, "channelId");
  checkNotNull(version, "version");
  this.channelId = channelId;
  this.version = version;
}

public RegisterResponseImpl(final String channelId, final Status status, final String pushEndpoint) {
  super(channelId);
  checkNotNull(status, "status");
  checkNotNull(pushEndpoint, "pushEndpoint");
  this.status = status;
  this.pushEndpoint = pushEndpoint;
}

public RegisterMessageImpl(final String channelId) {
  checkNotNull(channelId, "channelId");
  this.channelId = channelId;
}

public UnregisterMessageImpl(final String channelId) {
  checkNotNull(channelId, "channelId");
  this.channelId = channelId;
}

public UnregisterMessageImpl(final String channelId) {
  checkNotNull(channelId, "channelId");
  this.channelId = channelId;
}

public RegisterMessageImpl(final String channelId) {
  checkNotNull(channelId, "channelId");
  this.channelId = channelId;
}

public HelloResponseImpl(final String uaid) {
  checkNotNull(uaid, "uaid");
  this.uaid = uaid;
}