private static void checkUsage(VariableStorage storage, Address storageAddr,
			Integer stackOffset, Register register) {
		boolean invalidUsage = false;
		if (storage != null) {
			invalidUsage = storageAddr != null || stackOffset != null || register != null;
		}
		else if (register != null) {
			invalidUsage = storageAddr != null || stackOffset != null;
		}
		else if (stackOffset != null) {
			invalidUsage = storageAddr != null;
		}
		if (invalidUsage) {
			throw new IllegalArgumentException("only one storage location may be specified");
		}
	}
Determine if current name is a default name.  This is more important for parameters
so always returning false for locals is OK.
@return true if name is reserved as a default name
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/listing/VariableImpl.java