# Annotations

* [\[EN\]PurchaseClient.ConnectionState](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.connectionstate)
* [\[EN\]PurchaseClient.FeatureType](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.featuretype)
* [\[EN\]PurchaseClient.ProductType](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.producttype)
* [\[EN\]PurchaseClient.RecurringAction](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.recurringaction)
* [\[EN\]PurchaseClient.ResponseCode](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.responsecode)
* [\[EN\]PurchaseData.AcknowledgeState](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchasedata.acknowledgestate)
* [\[EN\]PurchaseData.PurchaseState](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchasedata.purchasestate)
* [\[EN\]PurchaseData.RecurringState](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchasedata.recurringstate)
* [\[EN\]PurchaseFlowParams.ProrationMode](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseflowparams.prorationmode)