code: def setup(self, margs, msize):
      xs = np.random.uniform(-1, 1, 6).reshape(2, 3)
      m1 = [[True, False, False], [False, False, True]]
      xl = np.random.uniform(-1, 1, 100 * 100).reshape(100, 100)
      maskx = xl > 0.8
      self.nmxs = np.ma.array(xs, mask=m1)
      self.nmxl = np.ma.array(xl, mask=maskx)
  
imports: from .common import Benchmark
  import numpy
label_desc: Use image node_id 1 for calling the MAMethodGetItem obj's underlying member method code with example usage: obj.setup(margs, msize) without return types