code: function() {
          if (Ext.isDefined(Ext.global.console)) {
              Ext.global.console.warn('Ext.util.MixedCollection: find has been deprecated. Use findBy instead.');
          }
          return this.findBy.apply(this, arguments);
      }
docs: <deprecated since="0.99"> 
  Returns the first item in the collection which elicits a true return value from the passed selection function.
  @deprecated 4.0 Use {@link #findBy} instead.
  @since Ext 1