code: def test_init_with_initializer_dtype(self):
      with chainer.using_config("dtype", "float16"):
          array = self._generate_array(numpy, "float64")
      self.assertEqual("float64", array.dtype)
  
imports: import os
  import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import initializers
  from chainer import testing
  from chainer.testing import attr
  import chainerx
label_desc: Use image node_id 4 for calling the TestGenerateArray obj's underlying member method code with example usage: obj.test_init_with_initializer_dtype() without return types