code: def test_cmd_unsupported_scheme(dvc):
      ret = main(
          ["import-url", "unsupported://path", "import_unsupported"]
      )
      assert ret != 0
  
imports: import os
  import textwrap
  from uuid import uuid4
  import pytest
  from dvc.cli import main
  from dvc.dependency.base import Dependency, DependencyDoesNotExistError
  from dvc.dvcfile import load_file
  from dvc.exceptions import InvalidArgumentError
  from dvc.stage import Stage
  from dvc.testing.workspace_tests import TestImport
  from tests.utils import get_gitignore_content
label_desc: Use image node_id 2 for calling a global function with example usage: test_cmd_unsupported_scheme(dvc) without return types