src/vs/workbench/services/extensions/common/abstractExtensionService.ts/AbstractExtensionService/_updateExtensionsOnExtHost
class AbstractExtensionService:	private async _updateExtensionsOnExtHost(extensionHostManager: IExtensionHostManager, _toAdd: IExtensionDescription[], _toRemove: ExtensionIdentifier[], removedRunningLocation: Map<string, ExtensionRunningLocation | null>): Promise<void> {
		const toAdd = filterByExtensionHostManager(_toAdd, this._runningLocation, extensionHostManager);
		const toRemove = _filterByExtensionHostManager(_toRemove, extId => extId, removedRunningLocation, extensionHostManager);
		if (toRemove.length > 0 || toAdd.length > 0) {
			await extensionHostManager.deltaExtensions(toAdd, toRemove);
		}
	}