message: chore: add more help info in rpc test
diff: @@ -437,7 +437,8 @@ fn collect_rpc_examples_in_file(
  let key = RpcTestExample::search(rpc_method.to_string(), 42);
  assert!(
  collected.contains(&key),
  - "{}:{}: Expect an example with id=42 for RPC method {}",
  + "{}:{}: Expect an example with id=42 for RPC method {}. \
  + To skip the test, add a comment \"noexample\" after #[rpc]",
  path.display(),
  lineno,
  rpc_method,
  @@ -618,9 +619,16 @@ impl RpcTestSuite {
  /// Test cases are collected from code comments. Please put request and response JSON in their own code
  /// blocks and set the fenced code block type to "json".
  ///
  +/// The first example must use id 42. And extra examples for the same method must use different
  +/// ids.
  +///
  +/// Q. How to skip an RPC example test
  +///
  +/// Add noexample in the comment in the same line with `#[rpc(name = "...")]`.
  +///
  /// Q. How to setup and teardown the test case?
  ///
  -/// Edit `around_rpc_example`
  +/// Edit `around_rpc_example`.
  #[test]
  fn test_rpc_examples() {
  let suite = setup_rpc_test_suite(TARGET_HEIGHT);
  