public im.turms.server.common.access.client.dto.model.conversation.GroupConversation.Builder addGroupConversationsBuilder() {
            return getGroupConversationsFieldBuilder().addBuilder(
                    im.turms.server.common.access.client.dto.model.conversation.GroupConversation
                            .getDefaultInstance());
        }
<code>repeated .im.turms.proto.GroupConversation group_conversations = 2;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/conversation/Conversations.java