code: def generate_inputs(self):
      a = numpy.random.uniform(-1, 1, (4, 2, 3)).astype(self.dtype)
      b = self.b_data.astype(self.dtype)
      return a, b
  
file_path: chainer/tests/chainer_tests/functions_tests/array_tests/test_scatter_add.py
imports: import unittest
  import numpy
  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 TestScatterAdd obj's underlying member method code with example usage: obj.generate_inputs() and returns: a,  b