Verify if a claim for a period is allowed

claimTransaction.ts

public allowedToClaim(currentTime: number, startTime: number, payments: Array<Payment>): boolean {
  const currentPeriod = this.calculateCurrentPeriod(currentTime, startTime);
  if (payments.find(p =>
    p.type === 0 &&
    p.period === this.asset.period)) {
    return false;
  }
  return currentPeriod >= this.asset.period && (this.asset.period * PERIOD) + startTime < currentTime;
}