Method copy

app/src/main/java/eu/faircode/email/Helper.java:3102–3108

(File src, File dst)

    }

    static void copy(File src, File dst) throws IOException {
        try (InputStream is = new FileInputStream(src)) {
            try (OutputStream os = new FileOutputStream(dst)) {
                copy(is, os);
            }
        }
    }

    static long copy(Context context, Uri uri, File file) throws IOException {
        try (InputStream is = context.getContentResolver().openInputStream(uri)) {