code: def test_masked_array_multiply(self):
      # Ticket #254
      a = np.ma.zeros((4, 1))
      a[2, 0] = np.ma.masked
      b = np.zeros((4, 2))
      a * b
      b * a
  
file_path: numpy/numpy/ma/tests/test_regression.py
imports: import numpy
  from numpy.testing import assert_, assert_array_equal, assert_allclose, suppress_warnings
label_desc: Use image node_id 4 for calling the TestRegression obj's underlying member method code with example usage: obj.test_masked_array_multiply() without return types