code: def __mul__(self, other):
      return 42
  
imports: from __future__ import annotations
  import operator
  import numpy
  import pytest
  import dask.array
  from dask.array import Array
  from dask.array.chunk_types import is_valid_array_chunk, is_valid_chunk_type
  from dask.array.utils import assert_eq
label_desc: Use image node_id 1 for calling the UnknownScalar obj's underlying member method code with example usage: obj.__mul__(other) and returns: int