code: public void setValue(Object value)
              throws JspException
      {
          if (value != null)
              _state.value = value.toString();
          else
              _state.value = null;
      }
docs: Set the value of this CheckBoxOption.
  @param value the CheckBoxOption value
  @jsptagref.attributedescription A String literal or a data binding expression.  The value attribute determines the value submitted
  by the checkbox.
  @jsptagref.databindable true
  @jsptagref.attributesyntaxvalue <i>string_literal_or_expression_value</i>
  @netui:attribute required="false" rtexprvalue="true"
  description="A String literal or a data binding expression.  The value attribute determines the value submitted
  by the checkbox."