Used by a Requestor to begin and maintain a subscription, as specified using a Control and a context, to be notified of changes to a property's value. If oid is DOFObjectID.BROADCAST , DOFSubscription will subscribe to all matching providers at the time the subscription is created. Otherwise, it will select one matching provider and subscribe to its matching property. If there is no matching provider, then DOFSubscription will wait for one. If the provider goes away, then the search will resume for a matching provider.

To cancel the subscription, call DOFSubscription.destroy() .

NOTE: The Property's current value is always returned when the subscription is started.

NOTE: Intermediate changes that occur more frequently than minPeriod may be dropped to save bandwidth, but the most current value of the Property is always returned.

NOTE: An application must first express interest by calling beginInterest(DOFObjectID, DOFInterestLevel) for unicast subscriptions in order to determine the primary provider. If no interest is specified, then no non-local providers will be found.

public DOFSubscription createSubscription(
	DOFObjectID oid,
	DOFInterfaceProperty property,
	int minPeriod,
	DOFOperationControl control,
	DOFSubscriptionListener listener
)