class_docstr: Mimic xarray Dataset object.
class_docstr_tok: ["Mimic","xarray","Dataset","object","."]
docstr: Mimic rename method.
docstr_tok: ["Mimic","rename","method","."]
code: def rename(self, *args, **kwargs):
      """Mimic rename method."""
      return self
  
imports: import unittest
  from unittest import mock
  import dask.array
  import numpy
  import xarray
  from pytest import approx, raises
label_desc: Use image node_id 4 for calling the FakeDataset obj's underlying member method code with example usage: obj.rename() and returns: self