#vulnerable code 
                                @Override
    public NamedExecutable parse(Atom atom) {
        final String source = atom.getSourceCode();
        final StringBuilder groupBuilder = new StringBuilder();
        boolean nsFlag = false;

        for (char c : source.toCharArray()) {
            if (Character.isWhitespace(c)) {
                nsFlag = true;
            } else if (c == ';') {
                break;
            } else if (nsFlag) {
                groupBuilder.append(c);
            }
        }

        String groupName = groupBuilder.toString();
        Group group = GroupCenter.getGroup(groupName);
        atom.getPandaParser().getPandaBlock().setGroup(group);
        return group;
    } 
                            #location 7 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @Override
    public NamedExecutable parse(Atom atom) {
        final String source = atom.getSourcesDivider().getLine();
        final StringBuilder groupBuilder = new StringBuilder();
        boolean nsFlag = false;

        for (char c : source.toCharArray()) {
            if (Character.isWhitespace(c)) {
                nsFlag = true;
            } else if (c == ';') {
                break;
            } else if (nsFlag) {
                groupBuilder.append(c);
            }
        }

        String groupName = groupBuilder.toString();
        Group group = GroupCenter.getGroup(groupName);
        atom.getPandaParser().getPandaBlock().setGroup(group);
        return group;
    }