@Override
    public AggregatedHttpFileBuilder setHeaders(Iterable<? extends Entry<? extends CharSequence, ?>> headers) {
        return (AggregatedHttpFileBuilder) super.setHeaders(headers);
    }
Returns a newly created {@link AggregatedHttpFile} with the properties configured so far.
core/src/main/java/com/linecorp/armeria/server/file/AggregatedHttpFileBuilder.java