@Override
    @JsonIgnore
    public String value() {
        if (values.isEmpty()) {
            return null;
        }
        return SpringExpressionLanguageValueResolver.getInstance().resolve(values.iterator().next());
    }
Sets values.

@param values the values
core/cas-server-core-services-api/src/main/java/org/apereo/cas/services/DefaultRegisteredServiceProperty.java