public Map<String,Object> toMap() {
            Map<String,Object> map = new HashMap<String,Object>();
            map.put("uuid", this.uuid == null ? "" : this.uuid);
            map.put("name_label", this.nameLabel == null ? "" : this.nameLabel);
            map.put("name_description", this.nameDescription == null ? "" : this.nameDescription);
            map.put("size", this.size == null ? 0 : this.size);
            map.put("public", this._public == null ? false : this._public);
            map.put("last_updated", this.lastUpdated == null ? new Date(0) : this.lastUpdated);
            map.put("mime_type", this.mimeType == null ? "" : this.mimeType);
            return map;
        }