function objectToLowercase(obj) {
  const result = {};
  for (const key in obj) {
    if (obj.hasOwnProperty(key)) {
      result[key.toLowerCase()] = obj[key];
    }
  }
  return result;
}
The default parameters to include in the WMS URL to get feature information.  The values are as follows:
    service=WMS
    version=1.1.1
    request=GetFeatureInfo

@constant
@type {object}