public void setPartsSha1(List<String> sha1s) {
        JsonArray jsonArray = new JsonArray();
        for (String s : sha1s) {
            jsonArray.add(s);
        }
        set(FIELD_PARTS_SHA1, jsonArray);
    }
public void setPartsSha1 ( List < String > sha1s ) { JsonArray jsonArray = new JsonArray ( ) ; for ( String s : sha1s ) { jsonArray . add ( s ) ; } set ( FIELD_PARTS_SHA1 , jsonArray ) ; }
Util method for storing sha1 for parts being uploaded