code: def selu_custom(self, x):
      return self.selu(x, alpha=0.12, lmbda=1.21)
  
imports: import pytest
  import numpy
  import theano.tensor
label_desc: Use image node_id 9 for calling the TestNonlinearities obj's underlying member method code with example usage: obj.selu_custom(x) and returns: self