public Builder setIsGroupMessage(boolean value) {

            isGroupMessage_ = value;
            bitField0_ |= 0x00000002;
            onChanged();
            return this;
        }
<code>bool is_group_message = 2;</code>

@param value The isGroupMessage to set.
@return This builder for chaining.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/message/MessagesWithTotal.java