T- type of the event symbol for this event type.
public interface LastingEvent<T> extends EventType<T>
Quoteis an up-to-date information about best bid and best offer for a specific symbol.
Lasting events are conflated for each symbol. Last event for each symbol is always delivered to event listeners on subscription, but intermediate (next-to-last) events are not queued anywhere, they are simply discarded as stale events. More recent events represent an up-to-date information about some external entity.
Note, that subscription to all lasting events of a specific type via
WildcardSymbol.ALL symbol object does not benefit from the above
advantages of lasting events.
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