message: Unnecessary boolean not operation
diff: @@ -35,10 +35,10 @@ where
  /// Otherwise, the same URL is returned.
  fn endpoint_url(&self, url: &str) -> String {
  // Using the client's prefix in case it's a relative route.
  - if !url.starts_with("http") {
  - self.get_config().prefix.clone() + url
  - } else {
  + if url.starts_with("http") {
  url.to_string()
  + } else {
  + self.get_config().prefix.clone() + url
  }
  }
  