Use None instead of Any for constructors
@@ -492,7 +492,7 @@ class SignatureInfo:
# Annotated return type, if Any.
# Does not include constructors.
- annotated_return_type: str = str(ANY)
+ annotated_return_type: str | None = None
# Recorded return type, if Any.
recorded_return_types: list[str] = dataclasses.field(default_factory=list)
