public EHUnwindModel getUnwindModel() throws InvalidDataTypeException {
		checkValidity();
		if (unwindModel == null) {
			unwindModel = new EHUnwindModel(getProgram(), getUnwindCount(), getUnwindMapAddress(),
				validationOptions);
		}
		return unwindModel;
	}
Gets the unwind model for the function info.
@return the unwind model, which may be invalid.
@throws InvalidDataTypeException if valid FuncInfo data can't be created at the model's address.
Ghidra/Features/MicrosoftCodeAnalyzer/src/main/java/ghidra/app/cmd/data/exceptionhandling/EHFunctionInfoModel.java