_removeDashProp(raw = {}) {
    const options = _.mapValues(raw, (o) => {
      if (_.isPlainObject(o)) {
        return this._removeDashProp(o);
      }
      return o;
    });

    return _.pickBy(options, (value, key) => key.indexOf('-') < 0);
  }
remove original dashed key, keep the camel ones
@param raw
@private