public AddressSet getAddressSet() {
		AddressSet set = new AddressSet();
		if (isEmpty()) {
			return set;
		}
		lock.acquire();
		try {
			if (rangeMapTable == null) {
				return set;
			}
			AddressRangeIterator addressRanges = getAddressRanges();
			for (AddressRange addressRange : addressRanges) {
				set.add(addressRange);
			}
			return set;
		}
		finally {
			lock.release();
		}
	}
Returns set of addresses where a values has been set 
@return set of addresses where a values has been set
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/util/AddressRangeMapDB.java