code: def test_bash(self):
      s = "${ENV}"
      assert s == get_interpolator().interpolate(s)
  
file_path: dstack/src/tests/_internal/utils/test_interpolator.py
imports: import pytest
  from dstack._internal.utils.interpolator import VariablesInterpolator
label_desc: Use image node_id 2 for calling the TestVariablesInterpolator obj's underlying member method code with example usage: obj.test_bash() without return types