Review request for Microsoft.ContainerService/aks to add version stable/2025-09-01

[FumingZhang]

ARM (Control Plane) API Specification Update Pull Request

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API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
Swagger	Microsoft.ContainerService-aks
Go	sdk/resourcemanager/containerservice/armcontainerservice
Java	com.azure.resourcemanager:azure-resourcemanager-containerserviceaks-generated
JavaScript	@azure/arm-containerservice
Python	azure-mgmt-containerservice

[mikekistler]

I've approved this breaking change as a "branch policy exception", only because this is the closed description of the explanation for this change. The actual situation is that the REST API as described in GA API versions going back to 2023-08-01, when the IstioEgressGateway schema was first introduced, didn't work as documented. It didn't work because the Egress gateway feature was disabled becuase of flaws discovered in the design. But rather than remove the feature, it was allowed to remain in the GA API for 18 API versions until now, when the design flaw has been corrected an the feature will now be enabled if the user adds the required name field.

[ramoka178]

Approving per the last commit after the initial sign off.

[FumingZhang]

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[FumingZhang]

@jliusan could you please help review the breaking change of go sdk in this PR? Thanks

[jliusan]

@jliusan could you please help review the breaking change of go sdk in this PR? Thanks

I updated the branch, and the breaking Change disappeared