static public function isSubscriptionType($subscriptionType) {
    return ((string) $subscriptionType == Connect2PayClient::SUBSCRIPTION_TYPE_NORMAL ||
        (string) $subscriptionType == Connect2PayClient::SUBSCRIPTION_TYPE_INFINITE ||
        (string) $subscriptionType == Connect2PayClient::SUBSCRIPTION_TYPE_ONETIME ||
        (string) $subscriptionType == Connect2PayClient::SUBSCRIPTION_TYPE_LIFETIME);
  }
static public function isSubscriptionType($subscriptionType) {
    return ((string) $subscriptionType == Connect2PayClient::SUBSCRIPTION_TYPE_NORMAL ||
        (string) $subscriptionType == Connect2PayClient::SUBSCRIPTION_TYPE_INFINITE ||
        (string) $subscriptionType == Connect2PayClient::SUBSCRIPTION_TYPE_ONETIME ||
        (string) $subscriptionType == Connect2PayClient::SUBSCRIPTION_TYPE_LIFETIME);
  }
static public function isSubscriptionType ( $ subscriptionType ) { return ( ( string ) $ subscriptionType == Connect2PayClient :: SUBSCRIPTION_TYPE_NORMAL || ( string ) $ subscriptionType == Connect2PayClient :: SUBSCRIPTION_TYPE_INFINITE || ( string ) $ subscriptionType == Connect2PayClient :: SUBSCRIPTION_TYPE_ONETIME || ( string ) $ subscriptionType == Connect2PayClient :: SUBSCRIPTION_TYPE_LIFETIME ) ; }
Subscription Type validity

@param string $subscriptionType
Subscription Type to validate
@return boolean Validity is ok or not
Subscription Type validity