@Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        final ServiceUserIdentity that = (ServiceUserIdentity) o;
        return id.equals(that.id);
    }
User identity for a service user for this application to authenticate with other
applications on the same IDP realm. I.e. Stroom's processing user.
This user uses the client credentials flow.
stroom-security/stroom-security-common-impl/src/main/java/stroom/security/common/impl/ServiceUserIdentity.java