fn read_to_end(&self) {
    loop {
      let mut mut_stdin = self.stdin;
      let read_result = mut_stdin.read_exact(1);

      match read_result {
        Ok(read_char) => {
          let read_char_vec = &[read_char[0]];
          let read_str = str::from_utf8(read_char_vec).unwrap();
          println!("Reading: {0}", read_str);
          self.buffer.push_str(read_str);
        },
        Err(err) => {
          break;
        }
      }
    }
  }