code: def test_set_mask(self):
      x = cellprofiler_core.image.Image()
      x.Mask = numpy.ones((10, 10))
  
imports: import math
  import numpy
  import cellprofiler_core.image
label_desc: Use image node_id 5 for calling the TestImage obj's underlying member method code with example usage: obj.test_set_mask() without return types