@Nullable
    private static Set<String> parseIfNoneMatch(@Nullable String value) {
        if (ANY_TAG.equals(value)) {
            return null;
        }

        if (value == null) {
            return Set.of();
        }

        return parseTagValue(value);
    }
Constructs etag header instance.

@param ifMatch HTTP header
@param ifNoneMatch HTTP header
storage/src/main/java/com/epam/aidial/core/storage/util/EtagHeader.java