Lets the server know that this thread is about to begin a series of related operations that must all occur
on the same connection. The return value of this method implements IDisposable and can be placed in a
using statement (in which case RequestDone will be called automatically when leaving the using statement).
Namespace: MongoDB.DriverAssembly: MongoDB.Driver
(in MongoDB.Driver.dll) Version: 22.214.171.12498
A helper object that implements IDisposable and calls RequestDone()()()()
from the Dispose method.