def update(list_id, content_type, body, custom_headers:nil)
      response = update_async(list_id, content_type, body, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def update(list_id, content_type, body, custom_headers:nil)
      response = update_async(list_id, content_type, body, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Updates an Term List.

 @param list_id [String] List Id of the image list.
 @param content_type [String] The content type.
 @param body [Body] Schema of the body.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [TermList] operation results.