code: public StorageDescriptor withSortColumns(Order... sortColumns) {
          if (this.sortColumns == null) {
              setSortColumns(new java.util.ArrayList<Order>(sortColumns.length));
          }
          for (Order ele : sortColumns) {
              this.sortColumns.add(ele);
          }
          return this;
      }
docs: <p>
  A list specifying the sort order of each bucket in the table.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setSortColumns(java.util.Collection)} or {@link #withSortColumns(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param sortColumns
  A list specifying the sort order of each bucket in the table.
  @return Returns a reference to this object so that method calls can be chained together.