code: def test_getsize(self, backend_mode):
      with tempfile.TemporaryDirectory() as temp_dir_path:
          test_path = os.path.join(temp_dir_path, "test")
  
          content = b"placeholder text"
          with io.GFile(test_path, "wb") as file:
              file.write(content)
  
          with io.override_mode(backend_mode):
              size = io.getsize(test_path)
  
          self.assertEqual(size, len(content))
  
imports: import os
  import tempfile
  import jax
  import tensorflow
  from absl.testing import absltest, parameterized
  from flax import errors, io
label_desc: Use image node_id 14 for calling the IOTest obj's underlying member method code with example usage: obj.test_getsize(backend_mode) without return types