src/vs/workbench/api/common/extHostSCM.ts/ExtHostSourceControl/quickDiffProvider
class ExtHostSourceControl:	set quickDiffProvider(quickDiffProvider: vscode.QuickDiffProvider | undefined) {
		this._quickDiffProvider = quickDiffProvider;
		this.#proxy.$updateSourceControl(this.handle, { hasQuickDiffProvider: !!quickDiffProvider });
	}