Mark concrete class with internal

Author: jerelmiller

.api-reports/api-report-incremental.api.md

@@ -251,7 +251,7 @@ export namespace Incremental {
 
 // @public (undocumented)
 class IncrementalRequest<TData> implements Incremental.IncrementalRequest<GraphQL17Alpha9Handler.Chunk<TData>, TData> {
-    // (undocumented)
+    // @internal @deprecated (undocumented)
     getPendingWithInfo(): ({
         type: "stream";
         path: Incremental.Path;
@@ -265,7 +265,7 @@ class IncrementalRequest<TData> implements Incremental.IncrementalRequest<GraphQ
     handle(cacheData: TData | DeepPartial<TData> | null | undefined, chunk: GraphQL17Alpha9Handler.Chunk<TData>): FormattedExecutionResult<TData>;
     // (undocumented)
     hasNext: boolean;
-    // (undocumented)
+    // @internal @deprecated (undocumented)
     get streamInfo(): StreamInfoTrie | undefined;
 }
 

src/incremental/handlers/graphql17Alpha9.ts

@@ -101,10 +101,12 @@ class IncrementalRequest<TData>
   // of future stream items from already merged stream items.
   private streamPositions: Record<string, number> = {};
 
+  /** @internal */
   get streamInfo() {
     return this._streamInfo["strong"] ? this._streamInfo : undefined;
   }
 
+  /** @internal */
   getPendingWithInfo() {
     return Array.from(this.pendingMap.values()).map((pending) => {
       if (pending.id in this.streamPositions) {