public List<String> getStringList(final String key) {
    return getStringList(key, "\\s*,\\s*");
  }
Returns a list of strings with the comma as the separator of the value
dss-appconn/appconns/dss-eventchecker-appconn/src/main/java/com/webank/wedatasphere/dss/appconn/eventchecker/utils/Props.java