feat: GenAI - Added the Candidate.avg_logprobs property

PiperOrigin-RevId: 665405497

Author: vertex-sdk-bot

vertexai/generative_models/_generative_models.py

@@ -1941,6 +1941,10 @@ def content(self) -> "Content":
  raw_content=self._raw_candidate.content,
  )
 
+ @property
+ def avg_logprobs(self) -> float:
+ return self._raw_candidate.avg_logprobs
+
  @property
  def finish_reason(self) -> gapic_content_types.Candidate.FinishReason:
  return self._raw_candidate.finish_reason