Interface: PaymentProvider

readonly key: string;

authorize(input: AuthorizeInput): Promise<PaymentOpResult>;

capture(input: CaptureInput): Promise<PaymentOpResult>;

optional confirm(input: ConfirmInput): Promise<PaymentOpResult>;

optional fetchPaymentState(input: FetchStateInput): Promise<CanonicalTxn[]>;

getCapabilities(method?: 
  | "check"
  | "unknown"
  | "other"
  | "card"
  | "gift_card"
  | "account_balance"
  | "bank_transfer"
  | "cash"
  | "warrant"
  | "wallet"
  | "money_order"): ProviderCapabilities;

parseWebhook(req: WebhookRequest): Promise<ParsedWebhook>;

refund(input: RefundInput): Promise<PaymentOpResult>;

void(input: VoidInput): Promise<PaymentOpResult>;