How to use the azure-iot-http-base.Http function in azure-iot-http-base

constructor(httpBase?: Base) {
    super();
    this._httpBase = httpBase || new Base();
    this._config.pollingInterval = ProvisioningDeviceConstants.defaultPollingInterval;
    this._config.timeoutInterval = ProvisioningDeviceConstants.defaultTimeoutInterval;
  }

constructor(authenticationProvider: AuthenticationProvider, httpTransport?: any) {
        /*Codes_SRS_NODE_FILE_UPLOAD_ENDPOINT_16_019: [`FileUploadApi` shall throw a `ReferenceError` if `authenticationProvider` is falsy.]*/
        if (!authenticationProvider) throw new ReferenceError('authenticationProvider cannot be \'' + authenticationProvider + '\'');

        this._authenticationProvider = authenticationProvider;
        /*Codes_SRS_NODE_FILE_UPLOAD_ENDPOINT_16_018: [`FileUploadApi` shall instantiate the default `azure-iot-http-base.Http` transport if `transport` is not specified, otherwise it shall use the specified transport.]*/
        this.http = httpTransport ? httpTransport : new DefaultHttpTransport();
    }

function Http(config) {
  this._config = config;
  this._http = new Base();
}

function Http(config) {
  this._config = config;
  this._http = new Base();
}