src/main/java/org/jinstagram/realtime/InstagramSubscription.java
public InstagramSubscription verifyToken(String verifyToken) {
		Preconditions.checkEmptyString(verifyToken, "Invalid 'verifyToken' key");

		this.params.put(Constants.VERIFY_TOKEN, verifyToken);

		return this;
	}
public InstagramSubscription verifyToken(String verifyToken) {
		Preconditions.checkEmptyString(verifyToken, "Invalid 'verifyToken' key");

		this.params.put(Constants.VERIFY_TOKEN, verifyToken);

		return this;
	}
Configure the verifyToken for the subscription

@param verifyToken The token for the subscription
@return the {@link InstagramSubscription} instance for method chaining