stream_open() public method Opens file. This

count() public method Count elements of this cursor.

$db public property The MongoDB connection that this command is

setDefaultDatabaseName() public method Sets default database

addStream() public method Adds stream content to the upload

$fileStreamProtocol public property (available since version 2.1)

setValue() protected method Stores a value identified

gcSession() public method Session GC (garbage collection)

init() public method Initializes the object.

group() public method Performs aggregation using Mongo