Add fixes suggested by @bgbsww

src/Mod/Part/App/TopoShapePy.xml

@@ -817,7 +817,7 @@ infos contains additional info on the solutions. It is a list of tuples:
 Returns a SubElement
 getElement(elementName, [silent = False]) -> Face | Edge | Vertex
 elementName:  SubElement name - i.e. 'Edge1', 'Face3' etc. 
-              Accepts TNP names as well
+              Accepts TNP mitigation mapped names as well
 silent:  True to suppress the exception throw if the shape isn't found.
         </UserDocu>
       </Documentation>

src/Mod/PartDesign/PartDesignTests/TestTopologicalNamingProblem.py

@@ -1467,13 +1467,14 @@ class TestTopologicalNamingProblem(unittest.TestCase):
         pad.Length = 1
         # Act
         self.Doc.recompute()
-        if body.Shape.ElementMapVersion == "":  # Should be '4' as of Mar 2023.
+        if pad.Shape.ElementMapVersion == "":  # Should be '4' as of Mar 2023.
             return
         map = pad.Shape.ElementMap
         # Assert
+        self.assertGreater(pad.Shape.ElementMapSize,0)
         for tnpName in map.keys():
-            element1 = body.Shape.getElement(tnpName)
-            element2 = body.Shape.getElement(map[tnpName])
+            element1 = pad.Shape.getElement(tnpName)
+            element2 = pad.Shape.getElement(map[tnpName])
             self.assertTrue(element1.isSame(element2))
 
     def testFileSaveRestore(self):