public String getLoadFilter() {
        return String.format(this.loadFilter, getObjectClass());
    }
The load filter used to load entries by the {@link #objectClass}.
This is typically used to load all definitions that might be mapped to a service definition.
The search filter used to load entries by the {@link #idAttribute}.
This is typically used to load a specific service definition by its id during search operations.
api/cas-server-core-api-configuration-model/src/main/java/org/apereo/cas/configuration/model/support/ldap/serviceregistry/LdapServiceRegistryProperties.java