@Override
        public /* nullable */
        String getDetailsOrDefault(
                String key,
                /* nullable */
                String defaultValue) {
            if (key == null) {
                throw new NullPointerException("map key");
            }
            Map<String, String> map = internalGetDetails().getMap();
            return map.getOrDefault(key, defaultValue);
        }
<pre>
e.g. street address, city, state, country, etc.
</pre>

<code>map&lt;string, string&gt; details = 4;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/user/UserLocation.java