Optional ReadonlyflushThe interval, if any, at which the event processor should call flush.
Forgets any cached user information, so all subsequent contexts will be treated as new.
Updates the internal state if necessary to reflect that we have seen the given context. Returns true if it is time to insert an index event for this context into the event output.
Client implementations may always return true.
Interface for a strategy for removing duplicate contexts from the event stream. Client side event processors do not do this de-duplication, so the implementation is not part of the default event processor.