def get_by_billing_account(billing_account_id, custom_headers:nil)
      response = get_by_billing_account_async(billing_account_id, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def get_by_billing_account(billing_account_id, custom_headers:nil)
      response = get_by_billing_account_async(billing_account_id, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Gets the balances for a scope by billingAccountId. Balances are available via
 this API only for May 1, 2014 or later.

 @param billing_account_id [String] BillingAccount ID
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [Balance] operation results.