@@ -0,0 +1,366 @@
+package com.github.kahalemakai.opencsv.beans.processing.decoders;%0A%0Aimport com.github.kahalemakai.opencsv.beans.processing.Decoder;%0A%0Apublic class NullOrStringDecoder implements Decoder%3CString%3E %7B%0A    public static final String NULL_VALUE = %22null%22;%0A%0A    @Override%0A    public String decode(String value) %7B%0A        return value.equals(NULL_VALUE) ? null : value;%0A    %7D%0A%7D%0A

add NullOrStringDecoder for convenience