code: def _insert_compressed(
          collection_name, docs, check_keys, continue_on_error, opts, ctx):
      
      op_insert, max_bson_size = _insert(
          collection_name, docs, check_keys, continue_on_error, opts)
      rid, msg = _compress(2002, op_insert, ctx)
      return rid, msg, max_bson_size
docs: Internal compressed unacknowledged insert message helper.