sb.append("contentType: ").append(mContentTypeString).append(", ");
sb.append("contentType: ").append(mContentType).append(", ");
    public String toString() {        StringBuffer sb = new StringBuffer();        sb.append("MPartInfo: {");        sb.append("partName: ").append(mPartName).append(", ");        sb.append("contentType: ").append(mContentTypeString).append(", ");        sb.append("disposition: ").append(mDisposition).append(", ");        sb.append("filename: ").append(mFilename).append(", ");        sb.append("partNum: ").append(mPartNum).append(", ");        sb.append("isFilterableAttachment: ").append(isFilterableAttachment());        sb.append("}");        return sb.toString();    }