public RecordNumber getMapped(RecordNumber recordNumber) {
		return map.getOrDefault(recordNumber, recordNumber);
	}
Returns map to alternate record number or argument record number if no map.  Result is
 RecordNumber of alternative record for the complex type.  Map is of fwdref to definition
 RecordNumbers.  The fwdref number is generally, but not always, the lower number
@param recordNumber the record number for which to do the lookup
@return the mapped record number or the original record number if no mapped entry
Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/ComplexTypeMapper.java