@Override()
            public String get(String key) {
                return request.getHeader(key);
            }
Reads a {@link ApiRequest} from information found in the inbound
portion of the http request.
@param request the undertow http server request
@return a valid {@link ApiRequest}
@throws IOException
gateway/platforms/servlet/src/main/java/io/apiman/gateway/platforms/servlet/GatewayServlet.java