[Python] TypeSpec migration for azure-mgmt-managednetworkfabric

[msyyc]

TypeSpec migration breaking-change analysis — azure-mgmt-managednetworkfabric

Spec source

• TypeSpec folder: specification/managednetworkfabric/ManagedNetworkFabric.ResourceManager.Management
• Pre-migration swagger source: specification/managednetworkfabric/resource-manager@b770b862
• Swagger API version: 2023-06-15 (default tag: package-2023-06-15)
• Generated with apiVersion: 2025-07-15 (latest in TypeSpec enum Versions; the swagger default tag's 2023-06-15 is not present in the TypeSpec enum Versions)

Note: Because the swagger baseline (2023-06-15) and the generated TypeSpec apiVersion (2025-07-15) differ, the bulk of the changelog reflects genuine service/API-version evolution across two years, not migration artifacts.

Spec mitigation PR

• [Python] Mitigate breaking changes for azure-mgmt-managednetworkfabric azure-rest-api-specs#43811

Classification summary

Mitigated (4 model renames restored via @@clientName ... "python")

New (TypeSpec) name	Restored (swagger) name	Evidence
ManagementNetworkPatchConfiguration	ManagementNetworkConfigurationPatchableProperties	identical fields
TerminalServerPatchConfiguration	NetworkFabricPatchablePropertiesTerminalServerConfiguration	identical 7 fields
VpnOptionAProperties	OptionAProperties	old fields ⊆ new (superset)
VpnOptionBProperties	OptionBProperties	identical fields

Accepted breaking changes (no mitigation)

These remain in the SDK as genuine, non-mitigable changes:

• Multi-level flattening removal (guide Cat 11): the many Model X deleted or renamed its instance variable Y entries — properties now live under the actual REST hierarchy (e.g. under .properties). This is required TypeSpec behavior.
• Pageable *List model removals (Cat 8): ExternalNetworksList, InternalNetworksList, NetworkInterfacesList, NetworkToNetworkInterconnectsList.
• Unreferenced / restructured model removals (Cat 7): the *PatchableProperties family, ExtendedLocation, ExtensionEnumProperty, IpCommunity*OperationProperties, IpExtendedCommunity*OperationProperties, OptionAProperties-adjacent vpn config wrappers, NetworkToNetworkInterconnectPropertiesOptionBLayer3Configuration (a thin subclass alias over the still-existing OptionBLayer3Configuration), NetworkTap*DestinationsItem, PollingIntervalInSeconds, etc.
• Operation return-type changes due to the newer API version: numerous begin_* LRO methods now return the 2025-07-15 response types (e.g. UpdateAdministrativeStateResponse, OperationStatusResult, NetworkDeviceUpgradeResponse, ...) instead of the old shared CommonPostActionResponseFor* types, which no longer exist in the new API. No clean mitigation is possible.

See CHANGELOG.md for the full per-item list.