docs: Add documentation for the retry behavior

PiperOrigin-RevId: 824660249

Author: jaycee-li

google/genai/types.py

@@ -1481,7 +1481,7 @@ class HttpRetryOptions(_common.BaseModel):
  attempts: Optional[int] = Field(
  default=None,
  description="""Maximum number of attempts, including the original request.
- If 0 or 1, it means no retries.""",
+ If 0 or 1, it means no retries. If not specified, default to 5.""",
  )
  initial_delay: Optional[float] = Field(
  default=None,
@@ -1511,7 +1511,7 @@ class HttpRetryOptionsDict(TypedDict, total=False):
 
  attempts: Optional[int]
  """Maximum number of attempts, including the original request.
- If 0 or 1, it means no retries."""
+ If 0 or 1, it means no retries. If not specified, default to 5."""
 
  initial_delay: Optional[float]
  """Initial delay before the first retry, in fractions of a second. If not specified, default to 1.0 second."""