/**
* Create
*
* https://api.e-conomic.com/secure/api1/EconomicWebService.asmx?op=Subscription_Create
*
* subscriptionNumber Subscription number for the subscription
* subscriptionName Subscription name for the subscription
* description Description for the subscription
* includeName Enables include name for the subscription (boolean)
* subscriptionInterval Subscription interval for the subscription
* calendarYearBasis Enables calendar year for the subscription (boolean)
* collection Collection for the subscription
* addPeriod Enables add period for the subscription (boolean)
* allowMoreThanOneForEachDebtor Enables to allow more than one for each debitor for the subscription
*
* @param array $data
* @return mixed
*/
public function create(array $data)
{
$subscriptionHandle = $this->client->Subscription_Create($data)->Subscription_CreateResult;
return $subscriptionHandle;
}