src/vs/workbench/contrib/output/common/outputChannelModel.ts/BufferredOutputChannel/clear
class BufferredOutputChannel:	clear(): void {
		if (this.modelUpdater.isScheduled()) {
			this.modelUpdater.cancel();
		}
		if (this.model) {
			this.model.setValue('');
		}
		this.bufferredContent.clear();
		this.lastReadId = undefined;
	}