@Override
	Set<Address> deleteAddressRange(Address startAddr, Address endAddr, TaskMonitor monitor)
			throws CancelledException, IOException {

		AnchoredSymbolRecordFilter filter = new AnchoredSymbolRecordFilter();
		AddressRecordDeleter.deleteRecords(symbolTable, SYMBOL_ADDR_COL, addrMap, startAddr,
			endAddr, filter);

		return filter.getAddressesForSkippedRecords();
	}
SymbolDatabaseAdapter for version 3

This version added additional sparse columns to store optional data specific to certain
symbol types.  The adhoc string data column was eliminated.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/symbol/SymbolDatabaseAdapterV4.java