@Nullable
 public static Configurable createApplicationConfigurableForProvider(
     Class<? extends ConfigurableProvider> providerClass) {
   return createConfigurableForProvider(
       Configurable.APPLICATION_CONFIGURABLE.getExtensions(), providerClass);
 }
 @NotNull
 public static <T extends Configurable> T findApplicationConfigurable(
     @NotNull Class<T> configurableClass) {
   return findConfigurable(
       Configurable.APPLICATION_CONFIGURABLE.getExtensions(), configurableClass);
 }