/// <summary>
/// Get the balance of an account from the Accounts API, on behalf of a User.
/// </summary>
/// <param name="accountNumber">The account to be queried.</param>
/// <param name="userCredentialsCallback">A delegate that, if invoked, returns the User's credentials.</param>
/// <returns>The account balance as a double.</returns>
///
public async Task <double> GetAccountBalance(string accountNumber, UserCredentialsCallback userCredentialsCallback)
{
double balance;
var accessToken = await GetCurrentAccessToken(userCredentialsCallback);
using (var accountsApi = new AccountsApiClient(_accountsApiUrl, accessToken))
{
balance = await accountsApi.GetAccountBalance(accountNumber);
}
return(balance);
}
