Support AsyncAnthropicVertex as AnthropicProvider.anthropic_client (#3292)

Author: DouweM

pydantic_ai_slim/pydantic_ai/providers/anthropic.py

@@ -12,15 +12,15 @@
 from pydantic_ai.providers import Provider
 
 try:
-    from anthropic import AsyncAnthropic, AsyncAnthropicBedrock
+    from anthropic import AsyncAnthropic, AsyncAnthropicBedrock, AsyncAnthropicVertex
 except ImportError as _import_error:
     raise ImportError(
         'Please install the `anthropic` package to use the Anthropic provider, '
         'you can use the `anthropic` optional group — `pip install "pydantic-ai-slim[anthropic]"`'
     ) from _import_error
 
 
-AsyncAnthropicClient: TypeAlias = AsyncAnthropic | AsyncAnthropicBedrock
+AsyncAnthropicClient: TypeAlias = AsyncAnthropic | AsyncAnthropicBedrock | AsyncAnthropicVertex
 
 
 class AnthropicProvider(Provider[AsyncAnthropicClient]):