src/vs/workbench/contrib/output/common/outputChannelModel.ts/FileOutputChannelModel/cancelModelUpdate
class FileOutputChannelModel:	protected cancelModelUpdate(): void {
		this.modelUpdateCancellationSource.value?.cancel();
		this.modelUpdateCancellationSource.value = undefined;
		this.appendThrottler.cancel();
		this.replacePromise = undefined;
		this.modelUpdateInProgress = false;
	}