private void ensureAnswersIsMutable() {
            if (!answers_.isModifiable()) {
                answers_ = new com.google.protobuf.LazyStringArrayList(answers_);
            }
            bitField0_ |= 0x00000004;
        }
<pre>
Update
</pre>

<code>optional string question = 2;</code>

@param value The bytes for question to set.
@return This builder for chaining.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/request/group/enrollment/UpdateGroupJoinQuestionRequest.java