code: function(el, id) {
          var me = this,
              childEls = me.getChildEls(),
              baseId, childName, i, selector, value;
  
          baseId = (id || me.id) + '-';
          for (i = childEls.length; i--; ) {
              childName = childEls[i];
  
              if (typeof childName == 'string') {
                  // We don't use Ext.get because that is 3x (or more) slower on IE6-8. Since
                  // we know the el's are children of our el we use getById instead:
                  value = el.getById(baseId + childName);
              } else {
                  if ((selector = childName.select)) {
                      value = Ext.select(selector, true, el.dom); // a CompositeElement
                  } else if ((selector = childName.selectNode)) {
                      value = Ext.get(Ext.DomQuery.selectNode(selector, el.dom));
                  } else {
                      // see above re:getById...
                      value = el.getById(childName.id || (baseId + childName.itemId));
                  }
  
                  childName = childName.name;
              }
  
              me[childName] = value;
          }
      }
docs: Sets references to elements inside the component.
  @private