whole_func_string: function() {
          var me = this;
          return me.lhsMarker || (me.lhsMarker = Ext.DomHelper.append(me.el, {
              cls: me.resizeMarkerCls
          }, true));
      }
func_code_string: function() {
          var me = this;
          return me.lhsMarker || (me.lhsMarker = Ext.DomHelper.append(me.el, {
              cls: me.resizeMarkerCls
          }, true));
      }
func_documentation_string: Gets left hand side marker for header resizing.
  @private