@NotNull
  private JPanel createInterpretersPanel(final @Nullable PythonInterpreterSelectionMode preferredEnvironment) {
    final JPanel container = new JPanel(new BorderLayout());
    final JPanel decoratorPanel = new JPanel(new VerticalFlowLayout());

    final List<Sdk> allExistingSdks = Arrays.asList(PyConfigurableInterpreterList.getInstance(null).getModel().getSdks());
    final List<Sdk> existingSdks = getValidPythonSdks(allExistingSdks);
    final Sdk preferredSdk = getPreferredSdk(existingSdks);

    final String newProjectPath = getProjectLocation();
    final PyAddNewEnvironmentPanel newEnvironmentPanel = new PyAddNewEnvironmentPanel(allExistingSdks, newProjectPath, preferredEnvironment);
    final PyAddExistingSdkPanel existingSdkPanel = new PyAddExistingSdkPanel(null, null, existingSdks, newProjectPath, preferredSdk);

    PyAddSdkPanel defaultPanel = PySdkSettings.getInstance().getUseNewEnvironmentForNewProject() ?
                                 newEnvironmentPanel : existingSdkPanel;
    myInterpretersDecorator = new HideableDecorator(decoratorPanel, getProjectInterpreterTitle(defaultPanel).toString(), false);
    myInterpretersDecorator.setContentComponent(container);

    final List<PyAddSdkPanel> panels = Arrays.asList(newEnvironmentPanel, existingSdkPanel);
    myInterpreterPanel = new PyAddSdkGroupPanel(PyBundle.messagePointer("python.add.sdk.panel.name.new.project.interpreter"),
                                                getIcon(), panels, defaultPanel);
    myInterpreterPanel.addChangeListener(() -> {
      myInterpretersDecorator.setTitle(getProjectInterpreterTitle(myInterpreterPanel.getSelectedPanel()).toString());
      final boolean useNewEnvironment = myInterpreterPanel.getSelectedPanel() instanceof PyAddNewEnvironmentPanel;
      PySdkSettings.getInstance().setUseNewEnvironmentForNewProject(useNewEnvironment);
      checkValid();
    });

    addLocationChangeListener(event -> myInterpreterPanel.setNewProjectPath(getProjectLocation()));

    container.add(myInterpreterPanel, BorderLayout.NORTH);

    checkValid();

    return decoratorPanel;
  }
@NotNull
  private JPanel createInterpretersPanel(final @Nullable PythonInterpreterSelectionMode preferredEnvironment)