private Vtable processMainVtable(Address vtableAddress, GccTypeinfoRef typeinfoRef)
			throws CancelledException {
		Vtable vtable = processVtable(vtableAddress, typeinfoRef, false);
		if (vtable == null || !vtable.isValid()) {

			Msg.debug(this, "Invalid vtable at " + vtableAddress);
			return null;
		}
		return vtable;
	}
Method to process the primary vtable for each "vtable" label

@throws CancelledException    if cancelled
@throws InvalidInputException if invalid symbol input

@throws Exception             if Data cannot be created
Ghidra/Features/Decompiler/ghidra_scripts/classrecovery/RTTIGccClassRecoverer.java