@@ -0,0 +1,393 @@
+package com.box.sdk;%0A%0A/**%0A * The listener interface for monitoring the progress of a long-running API call.%0A */%0Apublic interface ProgressListener %7B%0A%0A    /**%0A     * Invoked when the progress of the API call changes.%0A     * @param numBytes   the number of bytes completed.%0A     * @param totalBytes the total number of bytes.%0A     */%0A    void onProgressChanged(long numBytes, long totalBytes);%0A%7D%0A

Add ProgressListener interface