public Rtti1Model getRtti1Model(int rtti1Index) throws InvalidDataTypeException {
		checkValidity();
		return rtti1Models.get(rtti1Index);
	}
Gets the BaseClassDescriptor (RTTI 1) model associated with this RTTI 2.
@param rtti1Index index of the RTTI 1 pointer in the array
@return the BaseClassDescriptor (RTTI 1) model or null.
@throws InvalidDataTypeException if this model's validation fails.
Ghidra/Features/MicrosoftCodeAnalyzer/src/main/java/ghidra/app/cmd/data/rtti/Rtti2Model.java