code: public void setMap(Map map) throws JspException
      {
          if (map == null) {
              String s = Bundle.getString("Tags_MapAttrValueRequired", new Object[]{"map"});
              registerTagError(s, null);
          }
          _map = map;
      }
docs: Sets the map expression.
  @param map the map expression.
  @jsptagref.attributedescription A data binding expression pointing to a {@link java.util.Map java.util.Map} of parameters.
  The expression can point at any implementation of the java.util.Map interface,
  including {@link java.util.AbstractMap java.util.AbstractMap},
  {@link java.util.HashMap java.util.HashMap},
  {@link java.util.Hashtable java.util.Hashtable}, etc.
  @jsptagref.databindable Read Only
  @jsptagref.attributesyntaxvalue <i>string_mapObject</i>
  @netui:attribute required="true" rtexprvalue="true" type="java.util.Map"
  description="A JSP 2.0 EL expression pointing to a java.util.Map of parameters."