attr-invalid-meta-words.stderr

error: Invalid attribute parameter(s): 'Xmeta'. Expected 'meta, raw_params'
 --> $DIR/attr-invalid-meta-words.rs:5:2
  |
5 | /     /// Returns a protocol version
6 | |     #[rpc(name = "protocolVersion", Xmeta)]
7 | |     fn protocol_version(&self) -> Result<String>;
  | |_________________________________________________^