public Address getTypeDescriptorAddress(int catchHandlerOrdinal)
			throws InvalidDataTypeException {
		checkValidity(catchHandlerOrdinal);
		DataType catchHandlerDt = getDataType();
		MemBuffer specificMemBuffer = getSpecificMemBuffer(catchHandlerOrdinal, catchHandlerDt);
		// component 1 is action pointer or displacement.
		Address refAddress = EHDataTypeUtilities.getAddress(catchHandlerDt, TYPE_DESCRIPTOR_ORDINAL,
			specificMemBuffer);
		return getAdjustedAddress(refAddress, 0);
	}
Gets the address, if there is one, of the type descriptor address in the 
HandlerType entry indicated by the ordinal. Otherwise, this returns null.
@param catchHandlerOrdinal 0-based ordinal indicating which HandlerType entry in the map.
@return the address of the type descriptor or null.
@throws InvalidDataTypeException if valid HandlerType data can't be created for 
the indicated ordinal.
Ghidra/Features/MicrosoftCodeAnalyzer/src/main/java/ghidra/app/cmd/data/exceptionhandling/EHCatchHandlerModel.java