refactoring of cmaps, widgets, etc.

test/cmap-selection-layout.test.js

@@ -66,11 +66,11 @@ test("the last selected concept determines target size and alignment", async ()
     "external links are serialized as shared concept content"
   );
   const reloaded = factory.createEditor(canvas, { Cmap: () => map });
-  reloaded.loadDocument(savedDocument);
+  reloaded.loadModel(editor.currentModel());
   assert.equal(
     reloaded.toDocument().concepts.find((concept) => concept.id === first.conceptId).externalUrl,
     "https://example.com/first",
-    "external links survive an editor save and reload round-trip"
+    "external links survive an editor model round-trip"
   );
   editor.selectItem(first);
   editor.selectItem(third, { additive: true });