code: def generate_inputs(self):
      x = np.random.uniform(-1, 1, self.shape).astype(self.dtype)
      return (x,)
  
file_path: chainer/tests/chainer_tests/functions_tests/math_tests/test_batch_l2_norm_squared.py
imports: import unittest
  import numpy
  import six
  import chainer
  from chainer import functions
  from chainer import testing
  from chainer.utils import type_check
label_desc: Use image node_id 2 for calling the TestBatchL2NormSquared obj's underlying member method code with example usage: obj.generate_inputs() and returns: x