debugging rxjs

Author: zarend

src/cdk/tree/tree.ts

@@ -399,12 +399,16 @@ export class CdkTree<T, K = T>
         this._nodeType,
         // NB: the data is unused below, however we add it here to essentially
         // trigger data rendering when expansion changes occur.
-        expansionModel.changed.pipe(
-          startWith(null),
-          tap(expansionChanges => {
-            this._emitExpansionChanges(expansionChanges);
-          }),
-        ),
+        //
+        // TODO: remove debug code and comments
+        // Temporarily commenting this out to debug a test failure
+        //
+        // expansionModel.changed.pipe(
+        //   startWith(null),
+        //   tap(expansionChanges => {
+        //     this._emitExpansionChanges(expansionChanges);
+        //   }),
+        // ),
       ])
         .pipe(
           switchMap(([data, nodeType]) => {