@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        CapabilitySet that = (CapabilitySet) o;
        return Objects.equals(caps, that.caps);
    }
@return the name if this is a predefined capability set, or empty if not
security-utils/src/main/java/com/yahoo/security/tls/CapabilitySet.java