@Deprecated
    public String origin() {
        return Iterables.getFirst(origins, CorsHeaderUtil.ANY_ORIGIN);
    }
Returns the allowed origin. This can either be a wildcard or an origin value.
This method returns the first specified origin if this policy has more than one origin.

@return the value that will be used for the CORS response header {@code "Access-Control-Allow-Origin"}

@deprecated Use {@link #originPredicate()} to check if an origin is allowed.
core/src/main/java/com/linecorp/armeria/server/cors/CorsPolicy.java