private void createMissingFunctions(List<Symbol> vftableSymbols)
			throws CancelledException, Exception {

		List<Address> unusedVftableReferences = findVftableReferencesNotInFunction(vftableSymbols);

		if (unusedVftableReferences.size() > 0) {
			extendedFlatAPI.createUndefinedFunctions(unusedVftableReferences);
		}

		// create these automatically if found
		findFunctionsUsingAtexit();
	}
Method to fix up the current program so that script will be more successful by finding
missing vftable referencing functions and missing RTTI data structures. 
manually create some of them
@throws CancelledException when cancelled
@throws Exception when data cannot be created
Ghidra/Features/Decompiler/ghidra_scripts/classrecovery/RTTIWindowsClassRecoverer.java