src/vs/workbench/contrib/scm/browser/dirtydiffDecorator.ts/DirtyDiffModel/setChanges
class DirtyDiffModel:	private setChanges(changes: IChange[]): void {
		const diff = sortedDiff(this._changes, changes, compareChanges);
		this._changes = changes;
		this._onDidChange.fire({ changes, diff });
	}