ENH: add remove objects handling in timeFunctionObject and regionFunctionObject

- makes it easier to implement functionObject or field object removal

src/OpenFOAM/db/functionObjects/timeFunctionObject/timeFunctionObject.C

@@ -39,6 +39,22 @@ Foam::functionObjects::timeFunctionObject::timeFunctionObject
 {}
 
 
+// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
+
+void Foam::functionObjects::timeFunctionObject::clearOutputObjects
+(
+    const wordList& objNames
+)
+{
+    objectRegistry& obr = storedObjects();
+
+    for (const word& objName : objNames)
+    {
+        obr.checkOut(objName);
+    }
+}
+
+
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
 Foam::objectRegistry&

src/OpenFOAM/db/functionObjects/timeFunctionObject/timeFunctionObject.H

@@ -49,7 +49,7 @@ namespace functionObjects
 {
 
 /*---------------------------------------------------------------------------*\
-             Class functionObjects::timeFunctionObject Declaration
+                     Class timeFunctionObject Declaration
 \*---------------------------------------------------------------------------*/
 
 class timeFunctionObject
@@ -66,6 +66,10 @@ protected:
 
     // Protected Member Functions
 
+        //- Remove specified items from "functionObjectObjects"
+        void clearOutputObjects(const wordList& objNames);
+
+
         //- No copy construct
         timeFunctionObject(const timeFunctionObject&) = delete;
 
@@ -77,7 +81,7 @@ public:
 
     // Constructors
 
-        //- Construct from components
+        //- Construct from Time
         timeFunctionObject(const word& name, const Time& runTime);