UNKNOWN_SUBSCRIPTION_UPGRADE_DOWNGRADE_POLICY constant

int const UNKNOWN_SUBSCRIPTION_UPGRADE_DOWNGRADE_POLICY

https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.ProrationMode#unknown_subscription_upgrade_downgrade_policy

Implementation

static const int UNKNOWN_SUBSCRIPTION_UPGRADE_DOWNGRADE_POLICY = 0;