public int getNumBases() throws InvalidDataTypeException {
		checkValidity();
		return EHDataTypeUtilities.getIntegerValue(getDataType(), NUM_BASES_ORDINAL,
			getMemBuffer());
	}
Gets the number of extended base classes in the base class array.
@return the number of base classes
@throws InvalidDataTypeException if this isn't a valid model at the specified address.
Ghidra/Features/MicrosoftCodeAnalyzer/src/main/java/ghidra/app/cmd/data/rtti/Rtti1Model.java