message: Complete the `bytes-type` e2e
diff: extern crate alloc;
  -use alloc::{format, string::String};
  +use alloc::string::String;
  pub mod w3;
  pub use w3::*;
  pub fn bytes_method(input: InputBytesMethod) -> Vec<u8> {
  - todo!()
  + let arg_str = String::from_utf8(input.arg.prop).unwrap();
  + let sanity_str = [&arg_str, " Sanity!"].concat();
  + String::into_bytes(sanity_str)
  }
  