public TypeDescriptorModel getRtti0Model() throws InvalidDataTypeException {
		checkValidity();
		// If valid, we will have the RTTI1 models already.
		if (!rtti1Models.isEmpty()) {
			// The first RTTI 1 indicates the class for this RTTI 2.
			Rtti1Model rtti1Model = rtti1Models.get(0);
			return rtti1Model.getRtti0Model();
		}
		throw new InvalidDataTypeException(
			getDefaultInvalidMessage() + " The array needs at least one entry.");
	}
Gets the type descriptor (RTTI 0) model associated with this RTTI 2.
@return the type descriptor (RTTI 0) model or null.
@throws InvalidDataTypeException if this model's validation fails.
Ghidra/Features/MicrosoftCodeAnalyzer/src/main/java/ghidra/app/cmd/data/rtti/Rtti2Model.java