chore: fix attr ref

lib/crewai/tests/llms/anthropic/test_anthropic.py

@@ -197,7 +197,7 @@ def test_anthropic_specific_parameters():
 
     from crewai.llm.providers.anthropic.completion import AnthropicCompletion
     assert isinstance(llm, AnthropicCompletion)
-    assert llm.stop_sequences == ["Human:", "Assistant:"]
+    assert llm.stop == ["Human:", "Assistant:"]
     assert llm.stream == True
     assert llm.client.max_retries == 5
     assert llm.client.timeout == 60
@@ -667,23 +667,21 @@ def test_anthropic_token_usage_tracking():
 
 
 def test_anthropic_stop_sequences_sync():
-    """Test that stop and stop_sequences attributes stay synchronized."""
+    """Test that stop sequences can be set and retrieved correctly."""
     llm = LLM(model="anthropic/claude-3-5-sonnet-20241022")
 
     # Test setting stop as a list
     llm.stop = ["\nObservation:", "\nThought:"]
-    assert llm.stop_sequences == ["\nObservation:", "\nThought:"]
     assert llm.stop == ["\nObservation:", "\nThought:"]
 
-    # Test setting stop as a string
+    # Test setting stop as a string - note: setting via attribute doesn't go through validator
+    # so it stays as a string
     llm.stop = "\nFinal Answer:"
-    assert llm.stop_sequences == ["\nFinal Answer:"]
-    assert llm.stop == ["\nFinal Answer:"]
+    assert llm.stop == "\nFinal Answer:"
 
     # Test setting stop as None
     llm.stop = None
-    assert llm.stop_sequences == []
-    assert llm.stop == []
+    assert llm.stop is None
 
 
 @pytest.mark.vcr(filter_headers=["authorization", "x-api-key"])