function lowercaseKeyHeader(headers) {
  var lowercaseHeader = {};
  if (isObject_1.isObject(headers)) {
    Object.keys(headers).forEach(function (key) {
      lowercaseHeader[key.toLowerCase()] = headers[key];
    });
  }
  return lowercaseHeader;
}
Judge isIP include ipv4 or ipv6
@param {String} options
@return {Array} the multipart uploads