message: replaced vec refund  to list refund
diff: use client::Client;
  use error::Error;
  -use params::{Identifiable, Metadata, RangeQuery, Timestamp};
  +use params::{Identifiable, List, Metadata, RangeQuery, Timestamp};
  use resources::Currency;
  use serde_qs as qs;
  @@ -129,7 +129,7 @@ impl Refund {
  /// List all refunds.
  ///
  /// For more details see [https://stripe.com/docs/api#list_refunds](https://stripe.com/docs/api#list_refunds).
  - pub fn list(client: &Client, params: RefundListParams) -> Result<Vec<Refund>, Error> {
  + pub fn list(client: &Client, params: RefundListParams) -> Result<List<Refund>, Error> {
  client.get(&format!("/refunds?{}", qs::to_string(&params)?))
  }
  }
  