@Override
    @NotNull
    @JsonProperty
    @JsonPropertyDescription("The Open ID Connect claim used to provide a more human friendly username for a user " +
                             "than that provided by uniqueIdentityClaim. It is not guaranteed to be unique and may " +
                             "change.")
    public String getUserDisplayNameClaim() {
        return userDisplayNameClaim;
    }
@return The type of Open ID Connnect identity provider in use.
stroom-security/stroom-security-openid-api/src/main/java/stroom/security/openid/api/AbstractOpenIdConfig.java