public static @NotNull Collection<String> getStringCollection(final Collection<? extends GenericValue> collection, Collection<String> result) {
    for (GenericValue o : collection) {
      ContainerUtil.addIfNotNull(result, o.getStringValue());
    }
    return result;
  }
public static @NotNull Collection<String> getStringCollection(final Collection<? extends GenericValue> collection, Collection<String> result)