private void ensureCustomAttributesIsMutable() {
            if ((bitField0_ & 0x00000020) == 0) {
                customAttributes_ = new java.util.ArrayList<>(customAttributes_);
                bitField0_ |= 0x00000020;
            }
        }
<code>optional int32 score = 5;</code>

@return This builder for chaining.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/group/GroupJoinQuestion.java