message: [model] Expose `random_seed()` through model
diff: @@ -141,4 +141,9 @@ impl EnvHandler {
  pub fn println(&self, content: &str) {
  env::println(content)
  }
  +
  + /// Returns the random seed from the latest block.
  + pub fn random_seed(&self) -> env::Hash {
  + env::random_seed()
  + }
  }
  