$TransactionFrequencyMap top-level constant
Implementation
const $TransactionFrequencyMap = {
TransactionFrequency.oncePerMonth: 'once_per_month',
TransactionFrequency.twicePerMonth: 'twice_per_month',
TransactionFrequency.fourTimesPerMonth: 'four_times_per_month',
TransactionFrequency.daily: 'daily'
};