BillingProvider

```
public class BillingProvider

                    
```
SPEC-070-B PN row 6 (N1) — the billing backend the SDK dispatches purchases through.
iOS has carried BillingProvider since SPEC-027 (Configuration.swift:23); Android auto-detected from the classpath, which left Adapty's apiKey with nowhere to live. The case names are iOS's, deliberately: they are the wire tags pinned by the billing_provider_adapty_tagged_map shared fixture, and a cross-platform wrapper must encode the same string on both platforms.
On Android StoreKit2 means Google Play Billing — the platform's own store. The name is a cross-platform tag, not a claim about which framework is linked.
The value-less cases cross the wrapper channel as bare strings; Adapty crosses as the tagged map {"type":"adapty","apiKey":"..."}.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public class`	`BillingProvider.StoreKit2`	The platform store: Google Play Billing on Android, StoreKit 2 on iOS.
`public class`	`BillingProvider.RevenueCat`
`public final class`	`BillingProvider.Adapty`	Adapty, with the publishable SDK key it needs to start.
`public class`	`BillingProvider.None`	No billing. Purchases and entitlement reads fail fast rather than silently no-op.
`public class`	`BillingProvider.Companion`

Field Summary

Fields
Modifier and Type	Field	Description
`private final String`	`type`

Method Summary

Modifier and Type	Method	Description
`final String`	`getType()`
`final Object`	`toWire()`	Re-encode to the wire form.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getType
```
 final String getType()
```
  - toWire
```
 final Object toWire()
```
    Re-encode to the wire form. Lossless round-trip with fromWire.