public Builder clearRecipientId() {
            bitField0_ &= ~0x00000080;
            recipientId_ = 0L;
            onChanged();
            return this;
        }
<code>optional int64 recipient_id = 8;</code>

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