@Override
	public DataType getDataType() {
		if (dataType == null) {
			dataType = doGetDataType();
		}
		return dataType;
	}
If this is a valid FuncInfo location, the correct FuncInfo structure is returned.
Otherwise this returns a null.
@return the FuncInfo structure or null.
Ghidra/Features/MicrosoftCodeAnalyzer/src/main/java/ghidra/app/cmd/data/exceptionhandling/EHFunctionInfoModel.java