class IfNoneMatchPreconditionHeader implements PreconditionHeader<EntityTag> {

    public static Optional<IfNoneMatchPreconditionHeader> fromDittoHeaders(final DittoHeaders dittoHeaders) {
        return dittoHeaders.getIfNoneMatch().map(IfNoneMatchPreconditionHeader::new);
    }

    private  IfNoneMatchPreconditionHeader(final EntityTagMatchers entityTagsToMatch);

}