src/vs/workbench/services/userDataSync/browser/userDataSyncWorkbenchService.ts/UserDataSyncWorkbenchService/switch
class UserDataSyncWorkbenchService:	private async switch(sessionId: string, accountName: string, accountId: string, authenticationProviderId: string): Promise<void> {
		const currentAccount = this.current;
		if (this.userDataSyncEnablementService.isEnabled() && (currentAccount && currentAccount.accountName !== accountName)) {
			// accounts are switched while sync is enabled.
		}
		this.currentSessionId = sessionId;
		this.telemetryService.publicLog2<UserAccountEvent, UserAccountClassification>('sync.userAccount', { id: accountId, providerId: authenticationProviderId });
		await this.update();
	}