src/vs/workbench/api/common/extHostTreeViews.ts/ExtHostTreeViews/$hasResolve
class ExtHostTreeViews:	async $hasResolve(treeViewId: string): Promise<boolean> {
		const treeView = this.treeViews.get(treeViewId);
		if (!treeView) {
			throw new Error(localize('treeView.notRegistered', 'No tree view with id \'{0}\' registered.', treeViewId));
		}
		return treeView.hasResolve;
	}