src/vs/workbench/contrib/output/common/outputChannelModel.ts/FileOutputChannelModel/onDidContentChange
class FileOutputChannelModel:	private onDidContentChange(size: number | undefined): void {
		if (this.model) {
			if (!this.modelUpdateInProgress) {
				if (isNumber(size) && this.endOffset > size) {
					// Reset - Content is removed
					this.update(OutputChannelUpdateMode.Clear, 0);
				}
			}
			this.update(OutputChannelUpdateMode.Append);
		}
	}