code: public ItemRequest<Tag> delete(String tag) {
      
          String path = String.format("/tags/%s", tag);
          return new ItemRequest<Tag>(this, Tag.class, path, "DELETE");
      }
docs: A specific, existing tag can be deleted by making a DELETE request
  on the URL for that tag.
  
  Returns an empty data record.
  
  @param  tag The tag to delete.
  @return Request object