Listing app service certificates fails

I have the following code that tries to list existing app service certificates (3rd party) via the REST API:

`Optional existingAppCert = azure.appServices().certificates().list().stream().filter(c -> c.thumbprint().equalsIgnoreCase(MY_THUMBPRINT)).findFirst();`

This code errors out because the REST API as documented here https://docs.microsoft.com/en-us/rest/api/appservice/certificates/list returns a plain list of certificates, while the list() call is expecting a PagedList<>.

As is, this API is not usable for me via the Java SDK :(

The exception is as follows:

> Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `com.microsoft.azure.management.appservice.implementation.PageImpl` out of START_ARRAY token
at [Source: (String)"[]"; line: 1, column: 1]
at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:63)
at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1342)
at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1138)
at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1092)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromArray(BeanDeserializerBase.java:1454)
at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:185)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:161)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4001)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3030)
at com.microsoft.rest.serializer.JacksonAdapter.deserialize(JacksonAdapter.java:131)
at com.microsoft.rest.ServiceResponseBuilder.buildBody(ServiceResponseBuilder.java:216)
at com.microsoft.rest.ServiceResponseBuilder.build(ServiceResponseBuilder.java:110)
at com.microsoft.azure.AzureResponseBuilder.build(AzureResponseBuilder.java:56)
at com.microsoft.azure.management.appservice.implementation.CertificatesInner.listDelegate(CertificatesInner.java:213)
at com.microsoft.azure.management.appservice.implementation.CertificatesInner.access$000(CertificatesInner.java:48)
at com.microsoft.azure.management.appservice.implementation.CertificatesInner$5.call(CertificatesInner.java:200)
at com.microsoft.azure.management.appservice.implementation.CertificatesInner$5.call(CertificatesInner.java:196)
at rx.internal.operators.OnSubscribeMap$MapSubscriber.onNext(OnSubscribeMap.java:69)
at retrofit2.adapter.rxjava.CallArbiter.deliverResponse(CallArbiter.java:120)
at retrofit2.adapter.rxjava.CallArbiter.emitResponse(CallArbiter.java:102)
at retrofit2.adapter.rxjava.CallExecuteOnSubscribe.call(CallExecuteOnSubscribe.java:46)
at retrofit2.adapter.rxjava.CallExecuteOnSubscribe.call(CallExecuteOnSubscribe.java:24)
at rx.Observable.unsafeSubscribe(Observable.java:10327)
at rx.internal.operators.OnSubscribeMap.call(OnSubscribeMap.java:48)
at rx.internal.operators.OnSubscribeMap.call(OnSubscribeMap.java:33)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.Observable.subscribe(Observable.java:10423)
at rx.Observable.subscribe(Observable.java:10390)
at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:443)
... 7 more

Start at CertificatesInner.java, especially listDelegate, and compare its expected response type with the REST API response documented in the issue. Reproduce the failure with an empty certificate list and verify that listing certificates can deserialize the plain array and support filtering by thumbprint.

Scritto dal modello di indicizzazione a partire dal testo della issue.