@NotNull
  private PropertiesComponent getPropertiesComponent() {
    PropertiesComponent propertiesComponent = myPropertiesComponent;
    if (propertiesComponent == null) {
      propertiesComponent = ReadAction.compute(() -> PropertiesComponent.getInstance());
      myPropertiesComponent = propertiesComponent;
    }
    return propertiesComponent;
  }
@NotNull
  private PropertiesComponent getPropertiesComponent()