You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mod.rs
    path of file: ./repos/lemmy/crates/apub/src/protocol/activities/create_or_update
    
    the code of the file until where you have to start completion: pub mod chat_message;
pub mod note;
pub mod page;

#[cfg(test)]
mod tests {
  use crate::protocol::{
    activities::create_or_update::{
      chat_message::CreateOrUpdateChatMessage,
      note::CreateOrUpdateNote,
      page::CreateOrUpdatePage,
    },
    tests::test_parse_lemmy_item,
  };
  use lemmy_util
    
  fn test_parse_lemmy_create_or_update() -> LemmyResult<()> {
    test_parse_lemmy_item::<CreateOrUpdatePage>(
      "assets/lemmy/activities/create_or_update/create_page.json",
    )?;
    test_parse_lemmy_item::<CreateOrUpdatePage>(
      "assets/lemmy/activities/create_or_update/update_page.json",
    )?;
    test_parse_lemmy_item::<CreateOrUpdateNote>(
      "assets/lemmy/activities/create_or_update/create_note.json",
    )?;
    test_parse_lemmy_item::<CreateOrUpdateChatMessage>(
      "assets/lemmy/activities/create_or_update/create_private_message.json",
    )?;
    Ok(())
  }