[ISSUE #8974] Support recalling of delay message

[imzs]

[ISSUE #8974] Support recalling of delay message

[qianye1001]

Returning an additional handle in all send Response operations introduces overhead. If this feature is not required, there should be an option to disable it.

[imzs]

Returning an additional handle in all send Response operations introduces overhead. If this feature is not required, there should be an option to disable it.

This field is somewhat similar to transactionId. As previously mentioned, the API defines a common semantic. In cases where unsupported message types are encountered, it returns null values, which also implies that the current message does not support recall operation, this may be considered as a switch.