public static @NotNull <S extends Scheme> Collection<SchemeImporterEP<S>> getExtensions(Class<S> schemeClass) {
    List<SchemeImporterEP<S>> importers = new ArrayList<>();
    for (SchemeImporterEP<?> importerEP : EP_NAME.getExtensionList()) {
      if (schemeClass.getName().equals(importerEP.schemeClass)) {
        //noinspection unchecked
        importers.add((SchemeImporterEP<S>)importerEP);
      }
    }
    return importers;
  }
public static @NotNull <S extends Scheme> Collection<SchemeImporterEP<S>> getExtensions(Class<S> schemeClass)