code: def randn(self):
      return np.array(np.random.randn(*self.shape)).astype(self.dtype)
  
imports: import numpy
  from autograd.extend import VSpace
  from autograd.builtins import NamedTupleVSpace
label_desc: Use image node_id 7 for calling the ArrayVSpace obj's underlying member method code with example usage: obj.randn() and returns: np