new JNameExpression( null,  STATE_PARAM_NAME),
getDataField(),
    public static JExpression getStreamContext() {	return new JFieldAccessExpression(/* tokref */				       null,				       /* prefix */				       new JNameExpression(/* tokref */ 							   null,							   /* ident */							   STATE_PARAM_NAME),				       /* ident */				       CONTEXT_VAR_NAME);    }