constructor(dispatch, errorHandlers, defaultOptions = {
    Accept: 'application/json',
    credentials: 'same-origin',
    'Content-Type': 'application/json'
}) {
    this.dispatch = dispatch;
    this.networkErrorHandler = errorHandlers.networkErrorHandler;
    this.backendErrorHandler = errorHandlers.backendErrorHandler;
    this.parseErrorHandler = errorHandlers.parseErrorHandler;
    this.defaultOptions = defaultOptions;
}