code: protected boolean hasComplexValue(ControlBeanContext context, Method m, Object[] args) {
          Object val = getParameterValue(context, m, args);
          return val instanceof JdbcControl.ComplexSqlFragment;
      }
docs: A reflection fragment may evaluate to an JdbcControl.ComplexSqlFragment type,
  which requires additional steps to evaluate after reflection.
  
  @param context Control bean context.
  @param m Method.
  @param args Method args.
  @return true or false.