presto-spi/src/main/java/io/prestosql/spi/eventlistener/QueryCreatedEvent.java/QueryCreatedEvent/QueryCreatedEvent
class QueryCreatedEvent:    public QueryCreatedEvent(Instant createTime, QueryContext context, QueryMetadata metadata)
    {
        this.createTime = requireNonNull(createTime, "createTime is null");
        this.context = requireNonNull(context, "context is null");
        this.metadata = requireNonNull(metadata, "metadata is null");
    }