@Override
	public SpatialMap<TraceAddressSnapRange, T, TraceAddressSnapRangeQuery> reduce(
			TraceAddressSnapRangeQuery query) {
		return delegateRead(query.getAddressSpace(), m -> m.reduce(query), SpatialMap.emptyMap());
	}
{@inheritDoc}

Note this counts entries in memory spaces only. No register spaces are included.
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/trace/database/map/DBTraceAddressSnapRangePropertyMap.java