@java.lang.Override
        public boolean containsUserDefinedAttributes(java.lang.String key) {
            if (key == null) {
                throw new NullPointerException("map key");
            }
            return internalGetUserDefinedAttributes().ensureBuilderMap()
                    .containsKey(key);
        }
<code>map&lt;string, .im.turms.proto.Value&gt; user_defined_attributes = 6;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/request/user/UpdateUserRequest.java