feat(cdk/tree): fix lint errors

Author: BobobUnicorn

src/cdk/tree/control/base-tree-control.ts

@@ -13,6 +13,7 @@ import {TreeControl} from './tree-control';
  * Base tree control. It has basic toggle/expand/collapse operations on a single data node.
  *
  * @deprecated Use one of levelAccessor or childrenAccessor
+ * @breaking-change 14.0.0
  */
 export abstract class BaseTreeControl<T, K = T> implements TreeControl<T, K> {
   /** Gets a list of descendent data nodes of a subtree rooted at given data node recursively. */

src/cdk/tree/control/flat-tree-control.ts

@@ -17,6 +17,7 @@ export interface FlatTreeControlOptions<T, K> {
  * Flat tree control. Able to expand/collapse a subtree recursively for flattened tree.
  *
  * @deprecated Use one of levelAccessor or childrenAccessor
+ * @breaking-change 14.0.0
  */
 export class FlatTreeControl<T, K = T> extends BaseTreeControl<T, K> {
   /** Construct with flat tree data node functions getLevel and isExpandable. */

src/cdk/tree/control/nested-tree-control.ts

@@ -18,6 +18,7 @@ export interface NestedTreeControlOptions<T, K> {
  * Nested tree control. Able to expand/collapse a subtree recursively for NestedNode type.
  *
  * @deprecated Use one of levelAccessor or childrenAccessor
+ * @breaking-change 14.0.0
  */
 export class NestedTreeControl<T, K = T> extends BaseTreeControl<T, K> {
   /** Construct with nested tree function getChildren. */

src/cdk/tree/control/tree-control.ts

@@ -14,6 +14,7 @@ import {Observable} from 'rxjs';
  * User can also use it outside the `<cdk-tree>` to control the expansion status of the tree.
  *
  * @deprecated Use one of levelAccessor or childrenAccessor
+ * @breaking-change 14.0.0
  */
 export interface TreeControl<T, K = T> {
   /** The saved tree nodes data for `expandAll` action. */

src/cdk/tree/tree.ts

@@ -512,20 +512,20 @@ export class CdkTree<T, K = T> implements AfterContentChecked, CollectionViewer,
   }
 
   /**
-    * For the given node, determine the size of the parent's child set.
-    *
-    * This is intended to be used for `aria-setsize`.
-    */
+   * For the given node, determine the size of the parent's child set.
+   *
+   * This is intended to be used for `aria-setsize`.
+   */
   _getSetSize(dataNode: T) {
     const group = this._getNodeGroup(dataNode);
     return group.length;
   }
 
   /**
-    * For the given node, determine the index (starting from 1) of the node in its parent's child set.
-    *
-    * This is intended to be used for `aria-posinset`.
-    */
+   * For the given node, determine the index (starting from 1) of the node in its parent's child set.
+   *
+   * This is intended to be used for `aria-posinset`.
+   */
   _getPositionInSet(dataNode: T) {
     const group = this._getNodeGroup(dataNode);
     return group.indexOf(dataNode) + 1;
@@ -704,19 +704,19 @@ export class CdkTreeNode<T, K = T> implements FocusableOption, OnDestroy, OnInit
   }
 
   /**
-    * Determines the size of this node's parent's child set.
-    *
-    * This is intended to be used for `aria-setsize`.
-    */
+   * Determines the size of this node's parent's child set.
+   *
+   * This is intended to be used for `aria-setsize`.
+   */
   _getSetSize(): number {
     return this._tree._getSetSize(this._data);
   }
 
   /**
-    * Determines the index (starting from 1) of this node in its parent's child set.
-    *
-    * This is intended to be used for `aria-posinset`.
-    */
+   * Determines the index (starting from 1) of this node in its parent's child set.
+   *
+   * This is intended to be used for `aria-posinset`.
+   */
   _getPositionInSet(): number {
     return this._tree._getPositionInSet(this._data);
   }

src/components-examples/cdk/tree/cdk-tree-flat-level-accessor/cdk-tree-flat-level-accessor-example.ts

@@ -1,5 +1,4 @@
 import {ArrayDataSource} from '@angular/cdk/collections';
-import {FlatTreeControl} from '@angular/cdk/tree';
 import {Component} from '@angular/core';
 
 const TREE_DATA: ExampleFlatNode[] = [