See DRIVERS-595 for details.
Note: In addition to postBatchResumeToken support, SPEC-1122 (b00dbe8) also introduces a getResumeToken() method and specifies how the startAfter option (from SPEC-1141) should be used for resuming.
Support 'startAfter' option to the $changeStream stage
POC of Support postBatchResumeToken in change streams
Support postBatchResumeToken in change streams
Add tests for postBatchResumeToken support
Amend change stream missing resume token tests for wire version 8+
Clarify resume token used in resuming and getResumeToken