@java.lang.Override

    public im.turms.client.model.proto.model.common.Value getUserDefinedAttributesOrThrow(
            java.lang.String key) {
        java.lang.Class<?> keyClass = key.getClass();
        java.util.Map<java.lang.String, im.turms.client.model.proto.model.common.Value> map =
                internalGetUserDefinedAttributes();
        if (!map.containsKey(key)) {
            throw new java.lang.IllegalArgumentException();
        }
        return map.get(key);
    }
<code>map&lt;string, .im.turms.proto.Value&gt; user_defined_attributes = 10;</code>
turms-client-kotlin/src/main/java/im/turms/client/model/proto/request/group/UpdateGroupRequest.java