UBER-853 Add ydoc indexation (#3817)

Signed-off-by: Alexander Onnikov <alexander.onnikov@xored.com>

dev/server/src/server.ts

@@ -31,7 +31,7 @@ async function createNullFullTextAdapter (): Promise<FullTextAdapter> {
 }
 async function createNullContentTextAdapter (): Promise<ContentTextAdapter> {
   return {
-    async fetch (name: string, type: string, doc) {
+    async content (name: string, type: string, doc) {
       return ''
     },
     metrics: () => new MeasureMetricsContext('', {})
@@ -66,10 +66,14 @@ export async function start (port: number, host?: string): Promise<void> {
           stages: () => []
         },
         metrics: new MeasureMetricsContext('', {}),
-        contentAdapter: {
-          url: '',
-          factory: createNullContentTextAdapter
+        contentAdapters: {
+          default: {
+            factory: createNullContentTextAdapter,
+            contentType: '',
+            url: ''
+          }
         },
+        defaultContentAdapter: 'default',
         workspace: getWorkspaceId('')
       }
       return createPipeline(ctx, conf, [], false, () => {})