src/vs/workbench/api/browser/mainThreadDiagnostics.ts/MainThreadDiagnostics/_forwardMarkers
class MainThreadDiagnostics:	private _forwardMarkers(resources: readonly URI[]): void {
		const data: [UriComponents, IMarkerData[]][] = [];
		for (const resource of resources) {
			data.push([
				resource,
				this._markerService.read({ resource }).filter(marker => !this._activeOwners.has(marker.owner))
			]);
		}
		this._proxy.$acceptMarkersChange(data);
	}