code: @Override
      public T data(Object... values) {
          if (values == null || values.length == 0) {
              return (T) this;
          }
          if (this.data == null) {
              if (this.type == AxisType.category) {
                  data = new ArrayList<Object>();
              } else {
                  throw new RuntimeException("数据轴不能添加类目信息!");
              }
          }
          this.data.addAll(Arrays.asList(values));
          return (T) this;
      }
docs: 添加坐标轴的类目属性
  
  @param values
  @return