@Override
            public Map<ConfigDefinitionKey, ConfigDefinition> getConfigDefinitions() {
                return Map.of();
            }
A global pool of all config definitions that this server knows about. These objects can be shared
by all tenants, as they are not modified.

@author Ulf Lilleengen
configserver/src/main/java/com/yahoo/vespa/config/server/StaticConfigDefinitionRepo.java