refactor: - move addChildren() implementation to the base class

Author: ilandikov

src/Renderer/HtmlQueryResultsRenderer.ts

@@ -183,12 +183,6 @@ export class HtmlQueryResultsRenderer extends QueryResultsRendererBase {
         this.currentULElement().appendChild(listItem);
     }
 
-    protected async addChildren(children: ListItem[]) {
-        if (children.length > 0) {
-            await this.addTaskList(children);
-        }
-    }
-
     private addEditButton(listItem: HTMLElement, task: Task) {
         const editTaskPencil = createAndAppendElement('a', listItem);
         editTaskPencil.classList.add('tasks-edit');

src/Renderer/QueryResultsRendererBase.ts

@@ -227,7 +227,11 @@ export abstract class QueryResultsRendererBase {
 
     protected abstract addTask(task: Task, taskIndex: number, children: ListItem[]): Promise<void>;
 
-    protected abstract addChildren(listItems: ListItem[]): Promise<void>;
+    private async addChildren(children: ListItem[]) {
+        if (children.length > 0) {
+            await this.addTaskList(children);
+        }
+    }
 
     /**
      * Display headings for a group of tasks.