code: def test_escaped_dollar_middle(self):
      assert "echo ${{ENV}}" == get_interpolator().interpolate(
          "echo $${{ENV}}"
      )
  
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 4 for calling the TestVariablesInterpolator obj's underlying member method code with example usage: obj.test_escaped_dollar_middle() without return types