Use Case

As a Mongosh engineer
I want to know when all the documents from the cursor have been returned
So that I can inform the user if there is more to "it"erate

User Impact

• Breaking change, close used to change to true when there were no more documents, now it changes to true when the cursor id becomes zero

Dependencies

• None

Unknowns

• Internally we probably have logic that now depends on this.

Acceptance Criteria

Implementation Requirements

• Restore close's prior behavior
• Move current behavior to new variable if necessary (possibly one of the other end states suffices already)

Testing Requirements

• Test that close means there are no more documents

Documentation Requirements

• Add API docs to all cursor properties but particularly ones that communicate state.
  • closed, killed, id (make a note about zero/nullish)

Follow Up Requirements

• NODE-5814