@Override
  @Nullable
  public String getProjectSdkName(@NotNull final Project project) {
    final Sdk projectJdk = getProjectSdk(project);
    if (projectJdk != null) {
      return projectJdk.getName();
    }
    final String projectJdkName = ProjectRootManager.getInstance(project).getProjectSdkName();
    final ProjectSdksModel projectJdksModel = ProjectStructureConfigurable.getInstance(project).getProjectJdksModel();
    return projectJdkName != null && projectJdksModel.findSdk(projectJdkName) == null ? projectJdkName : null;
  }
@Override
  @Nullable
  public String getProjectSdkName(@NotNull final Project project)