DOCS-14290 Mongosh db.currentOp now uses agg stage

Author: ianf-mongodb

source/includes/5.0-fact-currentop.rst

@@ -0,0 +1,9 @@
+Starting in MongoDB 5.0, the :pipeline:`$currentOp` aggregation 
+stage is used when running the helper method :method:`db.currentOp()` 
+with :binary:`~bin.mongosh`.
+
+Given this, in the 5.0 version of the shell and with mongosh,
+:method:`db.currentOp()` result sets are not subject to the
+:ref:`16MB BSON document return size<limit-bson-document-size>` 
+document return size limit for documents of the previous legacy 
+:binary:`~bin.mongo` versions.

source/reference/command/currentOp.txt

@@ -26,12 +26,9 @@ Definition
 
       { currentOp: 1 }
 
-   :binary:`~bin.mongosh` provides the :method:`db.currentOp()`
-   wrapper for the :dbcommand:`currentOp` command.
-
    .. note::
 
-      .. include:: /includes/fact-currentop.rst
+      .. include:: /includes/5.0-fact-currentop.rst
 
 Behavior
 --------

source/reference/method/db.currentOp.txt

@@ -25,7 +25,7 @@ Definition
 
    .. note::
 
-      .. include:: /includes/fact-currentop.rst
+      .. include:: /includes/5.0-fact-currentop.rst
 
 Syntax
 ~~~~~~

source/release-notes/5.0.txt

@@ -476,6 +476,13 @@ shell method) include additional information about the status of ongoing
 resharding operations for the resharding coordinator and the
 donor and recipient shards.
 
+``db.currentOp`` Method Now Uses Aggregation Stage in ``mongosh``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Starting in MongoDB 5.0, the :pipeline:`$currentOp` aggregation 
+stage is used when running the helper method :method:`db.currentOp()` 
+with :binary:`~bin.mongosh`.
+
 ``mongos`` / ``mongod`` Connection Pool
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~