/*package*/ void removeDistributor(MarketDataDistributor distributor) {
removeDistributor(distributor.getDistributionSpec());
}
/*package*/ void removeDistributor(DistributionSpecification spec) {
MarketDataDistributor removed = _distributors.remove(spec);
if (removed != null) {
s_logger.info("Removed {} from {}", removed, this);
} else {
s_logger.info("Removed distribution spec {} from {} (no-op)", spec, this);
}