return CStdType.Null;
return CStdType.Void;
    public CType getOutputType() {	// first look for a non-null type (since some of them might	// not be feeding into the joiner)	for (int i=0; i<size(); i++) {	    CType type = get(i).getOutputType();	    if (type!=CStdType.Null) {		return type;	    }	}	// otherwise, they're all null, so return null	return CStdType.Null;    }