Method _getLevelAccessor

src/cdk/tree/tree.ts:731–733

Level accessor, used for compatibility between the old Tree and new Tree

()

  /** Level accessor, used for compatibility between the old Tree and new Tree */
  _getLevelAccessor() {
    return this.treeControl?.getLevel?.bind(this.treeControl) ?? this.levelAccessor;
  }

  /** Children accessor, used for compatibility between the old Tree and new Tree */
  _getChildrenAccessor() {