code: def time_2d(self, a_masked, b_masked, size):
      # broadcasting happens this time
      np.ma.add(self.a_2d, self.b_2d)
  
imports: from .common import Benchmark
  import numpy
label_desc: Use image node_id 5 for calling the UFunc obj's underlying member method code with example usage: obj.time_2d(a_masked, b_masked, size) without return types