remove getter from supportsEventTopics

Signed-off-by: Paul Cowan <paul.cowan@cutting.scot>

plugins/catalog-backend-module-incremental-ingestion/api-report.md

@@ -11,6 +11,7 @@ import type { Config } from '@backstage/config';
 import type { DeferredEntity } from '@backstage/plugin-catalog-backend';
 import type { DurationObjectUnits } from 'luxon';
 import { EventParams } from '@backstage/plugin-events-node';
+import { EventSubscriber } from '@backstage/plugin-events-node';
 import type { Logger } from 'winston';
 import type { PermissionEvaluator } from '@backstage/plugin-permission-common';
 import type { PluginDatabaseManager } from '@backstage/backend-common';
@@ -37,7 +38,7 @@ export class IncrementalCatalogBuilder {
   addIncrementalEntityProvider<TCursor, TContext>(
     provider: IncrementalEntityProvider<TCursor, TContext>,
     options: IncrementalEntityProviderOptions,
-  ): void;
+  ): EventSubscriber;
   // (undocumented)
   build(): Promise<{
     incrementalAdminRouter: Router;

plugins/catalog-backend-module-incremental-ingestion/src/service/IncrementalCatalogBuilder.ts

@@ -118,8 +118,8 @@ export class IncrementalCatalogBuilder {
 
     return {
       onEvent: (params: EventParams) => engine.onEvent(params),
-      get supportsEventTopics() {
-        return engine.supportsEventTopics;
+      supportsEventTopics() {
+        return engine.supportsEventTopics();
       },
     };
   }