这个需要怎么理解刚开始学习不太理解

public ProjectBean getCreateMap(String project, String issueType) {
ProjectBean reset = new ProjectBean();
if (project.indexOf("-") > -1) {
project = project.substring(0, project.indexOf("-"));
}

    try {
        reset = issueutil.getFieldsFromCreateMeta(project, issueType);
        Map<String, Object> mapNameToKey = new HashMap<String, Object>();
        // 获取字段
        Map<String, FieldBean> map = reset.getFields();
        if (map != null) {
            for (String k : map.keySet()) {
                FieldBean fieldBean = map.get(k);
                mapNameToKey.put(fieldBean.getName(), k);
            }
        }
        reset.setFieldsNameToKey(mapNameToKey);
        issueutil.SetCommentMap(reset);
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return reset;
}