src/vs/workbench/contrib/customEditor/browser/customEditorInput.ts/CustomEditorInput/revert
class CustomEditorInput:	public override async revert(group: GroupIdentifier, options?: IRevertOptions): Promise<void> {
		if (this._modelRef) {
			return this._modelRef.object.revert(options);
		}
		this._defaultDirtyState = false;
		this._onDidChangeDirty.fire();
	}