@Override
    public int hashCode() {
        return Objects.hash(operation.getId(), structure.getId());
    }
Gets all of the event stream events of the event stream.

<p>The returned map is a mapping of the event name to the event.
For multi-event event streams, the name of hte event is the member
name of the multi-event union. For single-event event streams,
the name of the event is the name of the input or output structure
member referenced by the event stream trait.

@return Returns a map of event stream events.
smithy-model/src/main/java/software/amazon/smithy/model/knowledge/EventStreamInfo.java