[Search 2026-04-01] java SDK codegen

[Copilot]

Regenerates azure-search-documents from TypeSpec spec commit 840db4dc48aab6bdf5c45422c8d504aee463b783, bumping to version 12.1.0.

Changes

• Spec pin: Updated tsp-location.yaml to commit 840db4dc48aab6bdf5c45422c8d504aee463b783
• New models: Added discriminator subtypes for KnowledgeBaseActivityRecord:
  • KnowledgeBaseSearchIndexActivityRecord / KnowledgeBaseSearchIndexActivityArguments
  • KnowledgeBaseAzureBlobActivityRecord / KnowledgeBaseAzureBlobActivityArguments
  • KnowledgeBaseIndexedOneLakeActivityRecord / KnowledgeBaseIndexedOneLakeActivityArguments
  • KnowledgeBaseWebActivityRecord / KnowledgeBaseWebActivityArguments
• Deserialization: Extended KnowledgeBaseActivityRecord.fromJson() to route searchIndex, azureBlob, indexedOneLake, and web discriminator values to their respective subtypes
• Version: 12.0.0 → 12.1.0

Build/Test

mvn compile test-compile: BUILD SUCCESS
mvn test: 245 run, 0 failures, 22 errors (all TestProxy infra — proxy binary unavailable), 4 skipped

[efrainretana]

@copilot

DebugInfo is an empty model in the 2026-04-01 API and should NOT be part of the public API surface. Please internalize it — do not expose DebugInfo as a public type in the SDK. If it was generated as a public class/type, make it internal or remove it entirely from the public surface. Apply this change to the PR on this branch.

[Copilot]

@copilot

DebugInfo is an empty model in the 2026-04-01 API and should NOT be part of the public API surface. Please internalize it — do not expose DebugInfo as a public type in the SDK. If it was g...

DebugInfo is already internal — it's located in com.azure.search.documents.implementation.models (not the public models package), and the module-info.java only opens that package to com.azure.core for reflection, without exporting it. It's not part of the public API surface.