private DataType getVirtualBaseTablePointerDataType(RecordNumber recordNumber)
			throws PdbException {
		DataType dataType = applicator.getDataType(recordNumber);
		if (dataType == null) {
			throw new PdbException("Type not processed for record: " + recordNumber);
		}
		return dataType;
	}
Constructor for composite type applier, for transforming a composite into a Ghidra DataType
@param applicator {@link DefaultPdbApplicator} for which this class is working
Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/CompositeTypeApplier.java