code: func TransactionSetTypeWeb(id int64) (int, error) {
  	return errNo(C.newrelic_transaction_set_type_web(C.long(id)))
  }
docs: /*
   * Set the transaction type to 'WebTransaction'. This will automatically change
   * the category to 'Uri'. You can change the transaction category using
   * newrelic_transaction_set_category.
   *
   * @param transaction_id  id of transaction
   * @return  0 on success, else negative warning code or error code
   */